This is a list of the most common words starting with “in”:
in, into, information, interest, include, increase, industry, individual, involve, influence, income, including, investment, international, involved, indeed, introduce, indicate, institution, inside, insurance, interview, introduction, increased, intend, included, investigation, independent, injury, institute, industrial, intention, interests, index, interpretation, interesting, initiative, inflation, interested, incident, introduced, involvement, insist, instruction, increasing, instrument, individuals, investigate, inquiry, intended, input, invite, instead, initial, intelligence, inform, includes, inspector, intervention, internal, increasingly, institutions, inch, infection, interaction, interpret, incorporate, indication, invest, instance, interior, integration, independence, indicated, inner, interface, interval, increases, industries, infant, investor, invited, involving, inspection, invitation, intellectual, involves, innovation, invasion, install, informed, initially, incentive, insight, instructions, incidence, insisted, inn, intensity, injured, installation, intent, inevitably, instant, integrate, integrity, insect, instinct, instruments, interfere, indicator, induce, inevitable, insert, inspiration, interference, investors, injure, innocent, inspire, intervene, influenced, initiate, injuries, integrated, interrupt, inheritance, inches, inclusion, invention, informal, ingredient, injection, intake, interviews, inadequate, invent, indicates, inequality, intense, inability, inherit, inspect, instruct, installed, interim, interpreted, incorporated, incur, infrastructure, inspired, institutional, initiatives, insider, insult, intelligent, introducing, influential, inhibition, injunction, inquest, intensive, investigations, inhabitant, inhibit, ink, inland, instances, invariably, indirect, influences, inherited, insistence, instantly, intermediate, intervals, incidents, incomes, indemnity, indicating, investigated, indulge, infinitive, inhabitants, investigating, investigator, investments, instructor, intentions, interact, interrupted, interviewed, intimate, inclined, independently, induced, induction, inflict, insects, insure, interruption, interviewer, inappropriate, invade, invoke, inference, ingredients, inherent, inject, injustice, invested, invisible, inspectorate, insufficient, insulin, invented, invoice, inclination, incredible, incurred, inventory, infantry, infected, initiated, inset, instability, instructed, insulation, intact, integral, intimacy, incidentally, indicators, individually, invalid, intends, interactions, interpretations, interpreter, inadequacy, incentives, intrusion, inconvenience, incorporation, indigenous, indirectly, infect, infer, infirmary, inflammation, infusion, inhabit, intuition, innocence, innovative, inscription, inserted, insists, insolvency, insurer, intensify, indies, indoor, infants, inferior, infinite, infringement, inquiries, insertion, inspectors, instalment, instrumental, intellect, interactive, intercept, intercourse, intermediary, intestine, inviting, incapable, incline, incompetence, incorporating, incredibly, indications, indictment, intrigue, intruder, individuality, influx, ingenuity, initiation, invaluable, investing, inmate, insecurity, insights, insured, interrogation, intestinal, intonation, incomplete, inconsistency, incorrect, incumbent, investigators, industrialist, ineffective, inequalities, infections, inflammatory, informant, inventor, inversion, inward, innovations, inputs, inquire, insisting, instincts, intellectuals, interchange, interestingly, internationally, interpreting, interviewing, incarnation, inception, incompatible, intrinsic, introduces, inconsistent, incorporates, incubation, indicative, indifference, indifferent, introductory, indoors, indulgence, inefficiency, inefficient, inertia, infarction, infinitely, infinity, inhibitor, intriguing, intrude, invaded, inmates, innings, installations, instinctively, integer, intelligentsia, intending, intensely, intensified, internally, intimidation, intolerance, inaccurate, incense, intricate, incoming, indefinitely, indispensable, intuitive, inexperienced, infectious, inflicted, influencing, informative, informing, infringe, inhabited, inhibited, injected, intrigued, inverted, inlet, invoked, insignificant, inspected, instinctive, institutes, insulting, insurers, interfaces, intersection, intervened, intervening, intimidate, intolerable, intravenous, inauguration, incidental, inclusive, incompetent, incomprehensible, incubate, indecent, indecision, indexing, indices, indignation, invitations, involuntary, individualism, inducement, inductance, industrialists, inevitability, infancy, inferiority, infiltrate, infiltration, inflationary, inflow, info, ingenious, ingestion, inhale, inherently, initiating, injections, invader, inverness, inverse, innate, insane, insanity, inscribed, insistent, installing, instalments, instigate, instil, instituted, instrumentation, insulate, insurrection, integrating, intensification, intently, interdependence, interfering, interiors, interlude, internment, interplay, interrogate, interventions, interviewee, intimately, inaccessible, inaccuracy, inactive, inadvertently, inaugural, inaugurate, inaugurated, incapacity, invalidate, incest, incinerator, incisor, incompatibility, inconceivable, invoices, inwardly, incontinence, inconvenient, incorrectly, increment, incremental, incubated, incursion, indefinite, independents, indexed, indexes, indignant, indignity, indigo, intrinsically, invaders, indistinguishable, invertebrate, investigative, inwards, individualist, industrialised, industrialization, industrialized, inert, inexpensive, inexplicable, infamous, inferences, inferred, inflamed, inflate, inflated, informally, informants, informer, infrequent, initials, injecting, introductions, inkling, invites, innocently, innovator, inns, innumerable, inpatient, inquired, inquisition, inscribe, insecticide, insecure, insensitive, inseparable, insiders, insignia, inspecting, inspections, inspiring, instructive, instructors, intellectually, intentional, interception, interconnect, interconnection, interdisciplinary, interfered, intermediaries, intermittent, internationals, interpersonal, interrelationship, intersect, inaction, inactivity, inadequacies, inadequately, inanimate, intricacy, incarceration, invocation, incessant, incineration, incipient, incision, incite, incitement, inclinations, incoherence, incoherent, incomer, incomers, inconclusive, incongruity, incongruous, introspection, inundated, inventing, invert, inconsistencies, involuntarily, incredulity, incredulous, incredulously, incubator, inculcate, incurring, indebted, indecency, indemnify, indent, indentation, indenture, indeterminacy, indeterminate, indict, indicted, indie, indignantly, indiscretion, indiscriminate, intro, intrusive, invalidity, individualistic, indomethacin, induces, inducing, indulged, indulging, ineffectual, inept, ineptitude, inescapable, inexorable, inexorably, inexperience, inextricably, infallible, infarct, infatuation, inferno, infestation, infested, infidelity, infirmity, inflection, inflexibility, inflexible, infliction, informs, infrared, infrequently, infuriate, infuriated, infuriating, infuse, ingrained, ingratitude, inhalation, inhaled, inhibiting, inhibitions, inhibitors, inhibitory, inhibits, inhuman, iniquity, initiator, injunctions, injuring, intron, intruders, intuitively, inundate, invading, invective, inventions, inventive, inventories, invertebrates, investigates, inlay, investiture, invoking, innkeeper, innocuous, innovate, innuendo, inoculation, inorganic, inquisitive, inquisitor, inroad, inroads, insatiable, inscriptions, insemination, insensitivity, inserting, inserts, inshore, insides, insidious, insoluble, insolvent, insomnia, inspirational, instantaneous, instigated, instigation, instigator, instillation, institutionalised, institutionalized, instructing, insufficiency, insufficiently, insulated, insulted, insults, insurgency, intangible, integrator, intelligible, intensively, intentionally, inter, interacting, intercepted, intercession, interchangeable, intercity, intercom, interdependent, interdict, interferon, intergovernmental, interlocking, interlocutor, interminable, intermittently, internationalist, interoperability, interpolation, interpretative, interpreters, interrelated, interrogated, interrupting, interruptions, intersperse, interspersed, interventionist, interviewees, interviewers, intimation, intimidated, intimidating, intracellular, intractable, intransigence, intransigent, inaccuracies, inaccurately, inactivate, intravenously, inadmissible, intrepid, inadvertent, inalienable, inane, intricacies, inapplicable, inappropriately, inarticulate, inaudible, inborn, inbred, inbuilt, incalculable, incandescent, incantation, incapacitate, incapacitated, incarcerate, incarcerated, incarnate, incendiary, incensed, invests, incessantly, incestuous, inched, incinerate, incinerators, incisive, incisors, inciting, inclusions, incomparable, incomprehension, incongruously, inconsequential, inconsiderable, intricately, intrusions, invalidated, inventors, inveterate, inconspicuous, incontinent, incontrovertible, increments, incriminate, incriminating, incubating, incumbents, incurable, incurs, incursions, indebtedness, indecently, indecisive, indefatigable, indefensible, indefinable, indelible, indelibly, indemnities, indented, indescribable, indestructible, indexation, indexical, indictable, indifferently, indigestible, indigestion, indignities, indiscipline, indiscreet, indiscretions, indiscriminately, indisputable, introspective, indistinct, invariant, invasive, inventiveness, inversely, invidious, invisibility, individualised, individualists, individuation, indivisible, indoctrination, indomitable, inducements, inductive, inductor, indulgent, indulgently, industrially, industrious, ineffable, ineffectiveness, inefficiencies, inelastic, ineligible, inequitable, inequity, inertial, inescapably, inexhaustible, inexplicably, infantile, infantryman, infatuated, infective, infertile, infertility, infest, infidel, infiltrated, infiltrating, infinitesimal, infirm, inflame, inflammable, inflatable, inflections, inflicting, inflows, influenza, informality, informational, informers, infringed, infringements, infringing, infused, ingeniously, ingest, ingested, ingrain, inhabiting, inhabits, inhaler, inhaling, inheriting, inheritor, inheritors, inherits, inhospitable, inhumane, inhumanity, inimical, inimitable, initialled, initiates, injector, injectors, injurious, intrigues, injustices, introns, intruded, intruding, intuitions, invalids, invariable, invasions, inks, inky, inlaid, inlets, invigorating, invincible, invisibly, invokes, innards, invulnerable, innermost, innervation, innocents, innovators, innovatory, inoculate, inoffensive, inordinate, inordinately, inquiring, ins, inscrutable, insecticides, insecurities, insignificance, insincere, insinuate, insinuation, insipid, insistently, insolence, insolent, inspires, instabilities, installer, instantaneously, instep, instilled, instinctual, instituting, institutionalise, institutionalize, instructional, instructs, instrumentalist, instrumentalists, insubstantial, insular, insulating, insulator, insuperable, insurances, insurgent, insurgents, insuring, insurmountable, intakes, intarsia, integers, integrates, integrative, integrators, intelligently, intelligibility, intensifying, intensional, intensities, intents, interactional, interacts, interbank, intercede, intercellular, interchangeably, interconnections, intercontinental, interfacing, interferes, interject, interjected, interjection, interlaced, interlink, interlock, interlocutory, interloper, interludes, intermingle, intern, internalize, internalized, internationalism, internationalization, internecine, interned, interpose, interposed, interpretive, interprets, interrelate, interrelation, interrelationships, interrogator, interrupts, intersections, interstellar, interstitial, intertwine, intertwined, intervenes, interwar, interwoven, intestacy, intestate, intestines, intimated, intolerant, intone, intoned, intoxicate, intoxicated, intoxicating, intoxication
Note that this is an appendix for one or more entries in Punpedia.