improportionable
Not proportionable.

improportionate
Not proportionate.

improsperous
not prosperous

improvisate
To improvise

improviso
Not prepared beforehand; unpremeditated; extemporaneous.

imprudential
Synonym of imprudent.

impudent
Not showing due respect; bold-faced, impertinent.
Lacking modesty or shame; indelicate.

impudentest
superlative form of impudent: most impudent

impune
Unpunished.

imsonic
Of or relating to the theory that the words or names for things are formed by imitating the sounds associated with those things.

inable
Unable, not able.

inaccordant
Not accordant; discordant.

inadvertent
Not intentional; not on purpose; not conscious.
Inattentive.

inaequilateral
Obsolete spelling of inequilateral.

inaffected
unaffected

inaidable
Incapable of being assisted; helpless.

inalimental
Not nourishing.

inamorate
enamoured; in love

inamored
Obsolete form of enamored.

inamoured
Obsolete form of enamored.

inangular
Not angular.

inaquate
Embodied in, or changed into, water.

inattackable
Synonym of unattackable.

inaugurative
That inaugurates

inauspicate
inauspicious

inavailable
Obsolete form of unavailable.

incarnative
Causing growth of new flesh i.e. healing or regenerative.

incarnatives
plural of incarnative

incautelous
Incautious.

incaverned
Enclosed or in a cavern, or as if in a cavern.

incertain
Not certain, uncertain.

incestious
Obsolete form of incestuous.

incharitable
Obsolete form of uncharitable.

incisory
Having the quality of, or adapt t, cutting; incisive.

inclement
Stormy, of rough weather; not clement.
Merciless, unrelenting.
Unmercifully severe in temper or action.

incocted
Indigestible; also, raw.

incoercible
Not to be coerced; incapable of being compelled or forced.
Not capable of being reduced to liquid form by pressure.
That cannot be confined in, or excluded from, vessels, like ordinary fluids, gases, etc.; said of heat, light, electricity, etc.

incognitant
ignorant

incoherent
Not coherent.
Not coherent.
Not coherent.

incommixed
Not mixed together; uncombined.

incommodate
To incommode, make uncomfortable.

incommode
To make (someone) uncomfortable; to discomfort, to disturb, to trouble.
To cause (someone or something) inconvenience; to hinder, to impede, to inconvenience, to obstruct.

incommunicated
Not communicated or imparted.

incommunicating
Having no communion or intercourse with each other.

incompared
Peerless; incomparable.

incompensated
Archaic form of uncompensated.

incompetible
Outside of one's competence

incompleat
Obsolete spelling of incomplete.

incomposed
disordered; disturbed

incomprehended
Archaic form of uncomprehended.

inconceptible
inconceivable

inconcerning
unimportant

inconcinne
dissimilar; incongruous; unsuitable

inconcinnous
Not concinnous; unsuitable; discordant.

inconcludent
Inconclusive.
Not leading to any conclusions.

inconcluding
Having no consequence or conclusion

inconcoct
inconcocted

inconcocted
Imperfectly digested, matured, or ripened.

inconcurring
Not concurring; disagreeing.

inconditional
unconditional

inconditionate
Not limited or subject to conditions; absolute or unconditional.

inconform
unconformable

inconformable
Obsolete form of unconformable.

inconfused
Not confused

inconfutable
Not confutable.

inconnected
Not connected; disconnected.

inconscionable
Obsolete form of unconscionable.

inconscious
Unconscious.

inconsequent
Alternative form of inconsequential.
illogical; not following from the premises

inconsisting
inconsistent

inconsolate
Inconsolable; disconsolate.

inconstaunt
Obsolete form of inconstant.

inconsultable
Archaic form of unconsultable.

inconsummate
Not consummated; unfinished; incomplete.

inconsumptible
inconsumable

incontaminate
Not contaminated; pure.

incontracted
uncontracted

incontradictable
Not able to be contradicted; incontrovertible.

incontrollable
uncontrollable

inconversable
uncommunicative; reserved

inconversant
Not conversant or acquainted (with/in something); unfamiliar; unversed.

inconverted
Not turned or changed about.

incony
unlearned; artless; pretty; delicate

incorporal
Obsolete form of incorporeal.

incorporeous
Obsolete form of incorporeal.

incorresponding
Not corresponding; disagreeing.

incorrodible
Incapable of being corroded or eaten away.

incorrupted
Archaic form of uncorrupted.

incorruptive
incorruptible; not liable to decay

increaseful
abundant in produce; fruitful

incredited
Obsolete form of uncredited.

incredulous
Skeptical, disbelieving, or unable to believe.
Expressing or indicative of incredulity.
Difficult to believe; incredible.

incremable
Incombustible; resistant to being burnt.

incrustate
To encrust.

incult
Uncultivated, wild.
Rough, unrefined.

incultivated
uncultivated

incumbent
Chiefly followed by on or upon: leaning, or lying, reclining, or resting, on something else.
Chiefly followed by on or upon: leaning, or lying, reclining, or resting, on something else.
Chiefly followed by on or upon: leaning, or lying, reclining, or resting, on something else.
Being the current holder of an office or a title; specifically (Christianity, obsolete), of an ecclesiastical benefice.
Oppressive, pressuring.
Followed by on or upon: imposed on one as an obligation, especially due to one's office or position.
Hanging or leaning over.
Putting much effort into an activity or some work.
Weighing on one's mind.

incumbents
plural of incumbent

incumbrous
cumbersome; troublesome

indagative
Searching; exploratory; investigative.

indecomponible
indecomposable

indefaceable
Archaic form of undefaceable.

indefeatable
Archaic form of undefeatable.

indefeisible
Obsolete form of indefeasible.

indeficient
Not deficient; full or sufficient.

indeleble
Obsolete form of indelible.

indelectable
Not delectable; unpleasant; disagreeable.

indeliberated
Obsolete form of indeliberate.

independant
Obsolete spelling of independent.
Misspelling of independent.

indeprehensible
Not deprehensible.

indesinent
perpetual; eternal

indesirable
Archaic form of undesirable.

indetermined
Archaic form of undetermined.

indevirginate
virgin; virginal.

indevote
Not devoted.

indevout
Not devout.

indifferent
Ambivalent; unconcerned; uninterested, apathetic.
Indicating or reflecting a lack of concern or care.
Mediocre (usually used negatively in modern usage).
Having no preference.
Unbiased, impartial, judging fairly.
Not making a difference; without significance or importance.
Being in the state of neutral equilibrium.
Not different; matching.

indigene
Indigenous.

indigenes
plural of indigene

indigest
Crude; undigested; upset; unformed; unorganized.

indigested
Not resolved; not regularly disposed and arranged; unmethodical, crude.
Not digested in the stomach; undigested.
Of wounds: not in a state suitable for healing; (specifically) of an abscess or its contents: not ripened or suppurated.

indigesting
Failing to digest.

indigine
Alternative form of indigene.

indigines
plural of indigine

indign
Unworthy, undeserving.
disgraceful
unbecoming

indilatory
Not dilatory.

indiligent
Not diligent; idle, slothful.

indimensible
Unable to be measured.

indirect
Not direct
Not direct:
Not direct:
Not direct:
Not direct:
Figuratively
Figuratively

indirected
Lacking direction; aimless.

indiscrete
Not discrete mathematically.
Not divided into discrete parts.
Obsolete form of indiscreet.

indiscreter
comparative form of indiscrete: more indiscrete

indiscretest
superlative form of indiscrete: most indiscrete

indiscriminated
Obsolete form of undiscriminated.

indiscussed
Not discussed.

indispensable
Absolutely necessary or requisite; that one cannot do without.
Unbendable, that cannot be set aside or ignored.
Not admitting ecclesiastical dispensation; not subject to release or exemption; that cannot be allowed by bending the canonical rules.

indispensables
plural of indispensable

indisputed
Undisputed.

indistinctible
indistinguishable

indistinguished
indistinct