implike
Possessing the qualities or appearances of an imp.

imploratory
Entreating, supplicatory.

implosive
Formed by implosion.

implosives
plural of implosive

impoetic
Synonym of unpoetic.

impolarizable
That cannot be polarized.

imponderable
Not ponderable; without sensible or appreciable weight; incapable of being weighed.
Difficult or impossible to comprehend or evaluate.

imponent
That imposes a rule.

imporous
not porous; not having pores

importunate
Persistent or pressing, often annoyingly so.
Given to importunate demands, greedily or thoughtlessly demanding.

imposable
Capable of being imposed or laid on.

imposexed
Having undergone imposex.

impositional
Of or relating to imposition; intrusive.

impossible
Not possible; not able to be done or happen.
Very difficult to deal with.
imaginary

impossibles
plural of impossible

impossiblest
superlative form of impossible: most impossible

imposturing
Committing imposture.

imposturous
Alternative spelling of imposterous.

impotable
not drinkable

impoundable
Capable of being impounded.

impractical
Not practical; impracticable.

imprecational
imprecatory

imprecatory
That imprecates or invokes evil.

imprecise
Not precise or exact; containing some error or uncertainty.

impredicable
Not predicable.

impredicative
definable only in terms of a totality of which it is itself a part

impredictable
Unpredictable.

impregnable
Of a fortress or other fortified place: able to withstand all attacks; impenetrable, inconquerable, unvanquishable.
Too strong to be defeated or overcome; invincible.

impregnatable
Which can be impregnated.

impregnative
Relating to impregnation.

impregnatory
Relating to impregnation.

imprepared
Synonym of unprepared.

impresarial
Of or relating to an impresario.

imprescindible
Indispensable, essential, imperative, vital.

imprescribable
Synonym of imprescriptible.

imprescriptable
Alternative form of imprescriptible.

imprescriptible
Not subject to self-restraint: absolute, inalienable.

impressable
Alternative form of impressible.

impressible
Capable of being impressed; susceptible of receiving impression.
Capable of being imprinted upon.
Capable of creating an impression.

impressionable
Being easily influenced (especially of young people).

impressionables
plural of impressionable

impressional
Of, pertaining to, or having the characteristics of an impression.

impressionary
Of or relating to impressionism; impressionistic.

impressionistic
Pertaining to or characterized by impressionism.
Based on subjective reactions or feelings; not systematically researched or arrived at.
Based on impression rather than reason or fact; based on trying to impress somebody rather than trying for accuracy.
Impressible.

impressionless
unimpressed or unaffected
not susceptible

imprestable
Not payable.

impreventable
Not preventable; inevitable.

imprevisible
unforeseeable

imprimitive
not primitive

imprintable
Capable of being imprinted.

imprinted
simple past and past participle of imprint

imprisonable
Capable of being imprisoned.
Carrying a sentence of imprisonment.

improbable
Not likely to be true.
Not likely to happen.

improcreant
That does not procreate.

improcurable
Synonym of unprocurable.

improducible
Not capable of being produced.

improductive
Misconstruction of unproductive.

improgressive
Not progressive.

improminent
Not prominent.

impromptu
Improvised; without prior preparation, planning or rehearsal.

impromptus
plural of impromptu

impropriate
To appropriate for private use.
In ecclesiastical law, to place (ecclesiastical property) under control or management of a layperson.

improtected
Synonym of unprotected.

improvable
Capable of being improved.
Capable of being used to advantage; profitable.

improveable
Alternative spelling of improvable (“able to be improved”).

improvided
Unforeseen.

improvident
failing to provide for the future; reckless
incautious; prone to rashness

improvisable
Able to be improvised.

improvisational
Having the nature of an improvisation.

improvisatorial
Synonym of improvisatory.

improvisatory
Of, pertaining to, or in the nature of improvisation.

improvised
Created by improvisation; impromptu; unrehearsed.

imprudent
Not prudent; lacking prudence or discretion; indiscreet; injudicious; not paying attention to the consequences of one's actions.

impuberal
Immature; not having come to puberty.

impuberate
Not puberate.

impudic
Immodest.

impugnable
That can be impugned; open to (verbal) attack, open to question.

impuissant
weak; feeble; lacking power

impulseless
Devoid of impulses.

impulsive
Having the power of driving or impelling; giving an impulse; moving; impellent.
Actuated by impulse or by transient feelings; inclined to make rapid decisions without due consideration.
Acting momentarily, or by impulse; not continuous – said of forces.

impulsives
plural of impulsive

impulsory
Of, relating to, or caused by an impulse.

impunctate
Not punctate; not marked by spots, dots, points, or punctures.
Lacking pores.

impunctual
Not punctual.

impundulu
Synonym of lightning bird.

impunible
unpunishable

impunitive
Relating to impunity

impure
Not pure
Not pure
Not pure
Not pure

impurer
comparative form of impure: more impure

impurest
superlative form of impure: most impure

imputable
That may be imputed
Accusable; culpable; chargeable with fault.

imputational
Relating to imputation

imputative
Of, related, or pertaining to imputation.

imputrescible
Not putrescible, not subject to decay.

inabsorbable
Synonym of unabsorbable.

inaccentuated
Alternative form of unaccentuated.

inacceptable
Unacceptable.

inaccessible
Not able to be accessed; out of reach; inconvenient.
Not able to be reached; unattainable.

inachievable
unachievable

inacquiescent
Not acquiescent.

inactinic
That does not produce photochemical reactions (and can be used as a safelight in a photographic darkroom) (of light)

inactionable
Alternative form of unactionable.

inactivable
Capable of being inactivated

inactivatable
That can be inactivated

inactive
Not active, temporarily or permanently.
Not engaging in physical activity.
Not functioning or operating; broken down
Retired from duty or service.
Relatively inert.
Showing no optical activity in polarized light.

inadaptable
Not adaptable.

inadaptive
Not adaptive.

inaddable
Alternative form of inaddible.

inaddible
Incapable of being added.

inadept
Not adept.

inadherent
Not adhering.
Free; not connected with the other organs.

inadhering
Synonym of inadherent.

inadjustable
Alternative form of unadjustable.

inadmissable
Alternative spelling of inadmissible.

inadmissible
Not admissible, especially that cannot be admitted as evidence at a trial.

inadventurous
Not adventurous.

inadvisable
Unwise; not recommended; not prudent; not to be advised.

inadvised
Not to be advised; inadvisable.

inaequihymeniiferous
Of or relating to the arrangement of the hymenium of some mushroom species in the genera Coprinus, Coprinopsis, Coprinellus, Panaeolus, Psilocybe and Lacrymaria. The intermittent maturation and shedding of spores in radial bands beginning from the periphery of each gill, deliquescing from the bottom and advancing upwards.

inaesthetic
Not aesthetic:
Not aesthetic:

inaffable
Not affable.

inaffectionate
Synonym of unaffectionate.

inagglutinable
Not agglutinable.

inagitable
Free from agitation.

inalienable
Not subject to being alienated, that is, surrendered, taken away, or transferred to another.
Of or pertaining to a noun belonging to a special class in which the possessive construction differs from the norm, especially for particular familial relationships and body parts, regarding permanence.

inalterable
That cannot be altered.

inambiguous
Alternative form of unambiguous.

inamiable
Disagreeable, off-putting.

inamicable
Not amicable; unfriendly or hostile.

inamissible
Incapable of being lost.

inamovable
Not amovable.