12-Letter Words Starting with I

Insouciant

Office of an examining officer

Body of assessors examine 'O' grade

Examining official's office

Orders lessons (wordplay)

They're popular in IKEA manual

Something followed at school

A woman who instructs; a preceptress; a governess.

In short supply

Not able to fulfil a need

Leaving something to be desired

Insurgency

Rising from the ranks (wordplay)

Recruits in on planning for The Rising

Superior bishop fills in part 10

Intactness

A mental act or process; especially: (a) The act of understanding; simple apprehension of ideas; intuition. Bentley. (b) A creation of the mind itself. (a) The act of understanding; simple apprehension of ideas; intuition. Bentley. (b) A creation of the mind itself.

""Pertaining to, or produced by, the intellect or understanding; intellectual.""

Egghead uncle a little upset

Related to rational thought processes

Philosopher, for example.

Military wit (wordplay)

Upstairs perhaps for spying on community

Mental capacity for the inside story

Excess remnant with piece in shreds

Unrestrained alcohol consumption

Breaking the cane after being angry indicates lack of restraint

Interactant

Interaction

ALLELIC pertaining to {allele=n}

""INTERCALATE To insert, as a day or other portion of time, in a calendar.""

Intercalate

High-climbing war planes

Intercept

""The act of intercepting; as, interception of a letter; interception of the enemy. as, interception of a letter; interception of the enemy.""

Interceptor

Saying of a prayer on another's behalf

Form of prayer ...

Act of pleading on behalf of another

Intercessor

""Pertaining to, of the nature of, or characterized by, intercession; interceding; as, intercessory prayer. as, intercessory prayer.""

Interchain

Switched dancing there as redirected

CHANGER one that {changes=v}

Interchange

CHANNEL to direct along a course

CLUSTER to form into groups

Altercations getting out of hand between New York and California, perhaps

COMPANY to associate with

COMPARE to scrutinise for similarities

Link to each other

Join with each other

Link with each other

CONVERT to change into another form

Intercooler

Intercostal

COUNTRY the territory of a nation

Intercourse

CROPPED crop

Intercross

Meets

CULTURE to cultivate

Running between or among; intervening.

Intercut

Interdict

Bar delivery follows Italian team

Tabu.

""Having the power to prohibit; as, an interdictive sentence. as, an interdictive sentence.""

Interdictor

Belonging to an interdiction; prohibitory.

Interfacing

FACULTY an inherent power or ability

Football penalty, or phone problem

Radio distortion renders Rene frenetic

Disturbance to radio signals

GENERIC a type of drug

Period between Ice Ages

Interject

Abrupt utterance

A side cutting in, in a manner of speaking

Exclamation

Interjector

INTERJECTOR

Engaging with close fit

Engaging by fitting together

Like crossword words

Person who takes part in a conversation

Participant in a dialogue

Involved in conversation to disclose tricolour net

Interposition; intervention.

MITOTIC pertaining to {mitosis=n}

NUCLEAR pertaining to a {nucleus=n}

NUCLEON a subatomic particle

Of or pertaining to an internuncio.

Internuncio

Like the QE2

A specialized sensory nerve receptor that receives and responds to stimuli originating from within the body.

PSYCHIC one sensitive to extrasensory phenomena

Plural noun or verb form

(Of lines) crossing

Secant, for one

Urban-accident venue, often

Common urban accident venue

SERVICE to {repair=v}

""SOCIETY an organized group, a fellowship, also SODALITY""

SPACING the distance between any two objects

SPECIES specie

""Situated between vowels; immediately preceded and followed by vowel sounds, as, p in occupy, d in idea, etc.as, p in occupy, d in idea, etc.""

Intolerance

Exciting, exhilarating

Making drunk

Exhilarating - as the Christmas spirit may be

Drunkenness - exhilaration

Inebriation

Drunkenness

Within the heart.

Adjective (-al)

Occurring within or between the branches of a company: an intracompany network.

Within the cranium or skull.

Existing or taking place within the mind or psyche: intrapsychic conflict.

Arising or occurring within a species: intraspecific competition.

Baptism at start of book

Doctor in unit performing birth

Hostly duty

Basic, preliminary

Preliminary

Opening

Introject

Psychological effect making one a bit backward in pre-op process

Introspect

""The act or process of swelling or enlarging; also, the state of being swollen; expansion; tumidity; especially, the swelling up of bodies under the action of heat.""

(Medicine / Pathology) (tr; usually passive) Pathol to turn or fold (an organ or a part) inwards; invaginate intussusceptive   adj

Inveteracy

""INVOCATION The act or form of calling for the assistance or presence of some superior being; earnest and solemn entreaty; esp., prayer offered to a divine being.""

Ipecacuanha

Hot temper

Iridescence

Iridescent

""IRONICAL pertaining to irony, also IRONIC""

Irrelevance

Irreverence

ISOANTIGEN

Isochronal

Isochronism

Developed alike in the directions of the several lateral axes; said of crystals of both the tetragonal and hexagonal systems.

ISOENZYME

ISOTONIC of equal tension

ISOTOPIC pertaining to an {isotope=n}

Itinerancy