instincts
plural of instinct

institute
An organization founded to promote a cause
An institution of learning; a college, especially for technical subjects
The building housing such an institution.
The act of instituting; institution.
That which is instituted, established, or fixed, such as a law, habit, or custom.
The person to whom an estate is first given by destination or limitation.

institutes
plural of institute

instruct
To teach by giving instructions.
To tell (someone) what they must or should do.
To give (one's own lawyer) legal instructions as to how they should act in relation to a particular issue; thereby formally appointing them as one's own legal representative in relation to it.

instrumentary
instrumental
Pertaining to a legal instrument.

insuitable
Obsolete form of unsuitable.

insulary
Obsolete form of insular.

insulse
insipid, dull, stupid or tasteless

insultathons
plural of insultathon

insupposable
Incapable of being supposed or considered; inconceivable.

insuppressive
insuppressible; that cannot be suppressed

intactable
Not perceptible by touch.

intactible
Not perceptible to the touch.

intaminated
uncontaminated

intastable
Incapable of being tasted.

integral
Constituting a whole together with other parts or factors; not omittable or removable.
Of, pertaining to, or being an integer.
Relating to integration (“the process of finding the integral [noun] of a function”).
Being the root of some monic polynomial in A.
Whole; undamaged.

integrals
plural of integral

intellectual
Pertaining to, or performed by, the intellect; mental or cognitive.
Endowed with intellect; having a keen sense of understanding; having the capacity for higher forms of knowledge or thought; characterized by intelligence or cleverness
Suitable for exercising one's intellect; perceived by the intellect
Relating to the understanding; treating of the mind.
Spiritual.

intellectuall
Obsolete form of intellectual.

intellectualls
plural of intellectuall

intellectualoid
One with intellectual pretensions

intelligencing
Giving information; talebearing.

intelligencings
plural of intelligencing

intemperant
intemperate

intenable
Untenable.

intendant
The administrator of an opera house or theater.
One who has the charge, direction, or management of some public business; a superintendent.
A governor in various specific contexts, including certain South American countries, and historically in the kingdoms of Spain, Portugal, and France, and in imperial China.

intendent
Obsolete form of intendant.

intendents
plural of intendent

intenible
Incapable of holding or containing.

intensative
Adding intensity; intensifying.

intentional
Intended or planned; done deliberately or voluntarily.
Reflecting intention; marking an expenditure of will in the shape of a matter.
Done with intent.
Object to intention, only appearing due to wilful perception.

intentionals
plural of intentional

interastral
interstellar

intercident
Coming or falling between; happening accidentally.

intercidents
plural of intercident.

intercurrent
Running between or among, in a physical sense; interlayered.
Coming between, temporally; intervening in time.
Simultaneous; occurring at the same time as, or during the period of, another condition.
Not belonging to any particular season.

intercurrents
plural of intercurrent

interequinoctial
Occurring between equinoxes.

interiour
Obsolete spelling of interior.

interiours
plural of interiour

interlinearies
plural of interlineary

interlineary
interlinear

interlucent
shining between

interlunar
Of the four-day period between an old moon and a new moon, when the moon is not visible.

interlunary
Alternative form of interlunar.

intermeddlesome
Inclined or disposed to intermeddle.

intermedious
Obsolete form of intermediate.

intermedium
An intermediary.
A central carpal bone or tarsal bone.

intermundian
Obsolete form of intermundane.

intermured
Enclosed by, or as if by, walls

intermutual
Mutual.

internecive
internecine

interstellary
Archaic form of interstellar.

intersystematical
Archaic form of intersystematic.

intertranspicuous
Transpicuous within or between; able to see through.

intervalic
Obsolete spelling of intervallic.

intestine
The alimentary canal of an animal through which food passes after having passed all stomachs.
One of certain subdivisions of this part of the alimentary canal, such as the small or large intestine in human beings.

inthronizate
Placed upon a throne; enthroned.

intime
inward; internal; intimate

intolerated
Not tolerated.

intreatable
Not to be entreated; inexorable.

intreatful
Obsolete form of entreatful.

intrenchant
Not to be cut or sliced.

intricable
Intricate, entangled.

intrinsecal
Obsolete spelling of intrinsical.

intrinsick
Obsolete form of intrinsic.

introdden
Trodden inward; beaten in by treading.

introflexed
Flexed or bent inward.

introitive
Tending inward.

introvenient
Coming in together; entering; commingling.

intumulated
unburied

inundant
overflowing

inunderstanding
Devoid of understanding.

inusitate
Unusual.

inust
burnt in

inutile
useless; unprofitable.
useless (of a person); inept.

inuysybel
Obsolete spelling of invisible.

invaletudinary
Lacking health.

invalorous
Lacking valour; cowardly.

invaried
Obsolete form of unvaried.

invecked
Obsolete form of invected.

inventious
inventive

inventurous
Unadventurous; unventuresome.

inverecund
Immodest; shameless.

invertebral
Archaic form of invertebrate.

invertebrated
invertebrate; without a backbone

invict
Unconquered; unsubdued.

invidious
Causing ill will, envy, or offense.
Offensively or unfairly discriminating.
Envious, jealous.
Detestable, hateful, or odious. (Often used in cases of perceived unfairness, or when facing a difficult situation or choice — especially in the phrase invidious position.)

invigorant
Something that invigorates.

invigorants
plural of invigorant

invious
untrodden
impassable

invital
Not alive; lifeless.

invulgar
Not vulgar; refined; elegant.

invulgared
Made vulgar.

invulnerate
Invulnerable.

inward
Situated on the inside; that is within, inner; belonging to the inside.
Not superficially obvious, inner, not expressed, especially relating to mental or spiritual faculties as opposed to external ones.
Moving or tending toward the inside.
Not directed toward the outside world, and thus quiet or indistinct.
Internal to a particular place or country; not foreign, domestic.
Secret, private, kept hidden.
Coming from one’s inmost or sincerest feelings; heartfelt, earnest.
Intimate, closely acquainted; familiar, close.
Devoted to spiritual matters, pious, devout.
Tame.
Internal; applied through the stomach by being swallowed.

iridine
iridescent

irksom
Obsolete spelling of irksome.

ironical
Characterized by or constituting (any kind of) irony.
Given to the use of irony; sarcastic.
Feigning ignorance; simulating lack of instruction or knowledge; exhibiting Socratic irony.

ironick
Obsolete form of ironic.

irrationable
Archaic form of irrational.
Archaic form of irrational.

irreclaimed
Unreclaimed.

irrecognisable
Alternative spelling of irrecognizable.

irrecognizable
Unable to be recognized.

irregulous
lawless or profane

irrelate
unrelated; not connected

irrelievable
unrelievable

irreluctant
Not reluctant.

irremeable
Admitting no return.

irremediless
For which there is no remedy.

irrememberable
Synonym of unrememberable.

irremissive
Not remitting; unforgiving.

irrenewable
Synonym of unrenewable.

irrenowned
Not renowned, unfamous.

irreportable
Obsolete form of unreportable.

irreptitious
surreptitious; spurious

irrepublican
unrepublican

irreputable
disreputable; of ill repute

irresistless
Irresistable.

irresolved
Unresolved.

irrespective
Heedless, regardless.
Without regard for conditions, circumstances, or consequences; unbiased; independent; impartial.
Disrespectful.

irreturnable
Not to be returned.

irrevealable
Incapable of being revealed.