15-Letter Words Starting with I

IDENTICALNESS The quality or state of being identical; sameness.

Ideographical

Illegalization

ILLIBERALNESS The state of being illiberal; illiberality.

Illimitable

ILLOGICALNESS illogical

Note.

Immateriality

IMMATERIALIZE To render immaterial or incorporeal.

Immiscibility

Immobilization

""The act of immortalizing, or state of being immortalized.""

IMMOVABLENESS Quality of being immovable.

IMMUNOASSAY

Immunoblotting

Immunoglobulin

Immunological

Agent noun (-or)

Study or science of

IMMUTABLENESS immutable

Impalpability

Impassability

Impassibility

Impeccability

Inscrutable nature of Humpty Dumpty's vocabulary

The quality of being imperishable: indstructibility.

Impersonality

IMPERSONALIZE

Implacability

Executions made to sit on impalement

Tool is not a transformer of performances

Executions

Implicative

I am to meditate using skill despite suffering weightlessness!

Impossibility

Impregnable

Unlikelihoods

Improvability

Like "Whose Line Is It Anyway?"

Like comedy that's performed without a script

I am tentative about a theatrical opening that's unrehearsed

IMPROVISATORI

IMPULSIVENESS The quality of being impulsive.

The quality or state of being inaccessible; inaccessibleness.

State of being not allowable

Cause for suppression of evidence

Inalterable

The quality of being inapplicable; unfitness; inapplicableness.

In an unsuitable way

How a dress code violator is attired

The quality or state of being incalculable.

INCAPABLENESS The quality or state of being incapable; incapability.

INCLUSIVENESS inclusive

Utterly.

""INCOMMENSURABLE Not commensurable; having no common measure or standard of comparison; as, quantities are incommensurable when no third quantity can be found that is an aliquot part of both; the side and diagonal of a square are incommensurable with each other; the diameter and circumference of a circle are incommensurable. as, quantities are incommensurable when no third quantity can be found that is an aliquot part of both; the side and diagonal of a square are incommensurable with each other; the diameter and circumference of a circle are incommensurable.""

Being such that comparison is impossible; incommensurable.

A failure to get on together

Mismatch preventing coming together

Antagonistic state of things

Not worth mentioning

Of little moment.

Lacking worth or importance

Without concern, angrily imprisoning knight with Spanish page

Inconspicuous

The state or quality of being incorrigible.

Incredibility

Incrementalism

Incrementalist

The quality of being undefeasible.

The quality of being indefectible.

Vulnerableness

Indefinable

Vaguely dine out, finish and leave your tips

The state or quality of being indigestible; indigestibleness.

One little drink secures record likely to include name for being out of control

The quality or state of being indissoluble.

INDIVIDUALISE individual

Markedly self-reliant

Laissez-faire

Individuality

""INDIVIDUALIZE The mark as an individual, or to distinguish from others by peculiar properties; to invest with individuality.""

The resolution of endless ambition (wordplay)

The state or quality of being indubitable.

INDUSTRIALISE industrial

Setting up production factories, e.g

Setting up production factories, for example

Ineducability

INEFFABLENESS The quality or state of being ineffable or unutterable; unspeakableness.

Impossible to efface; indelible.

Useless condition

Without efficacy or effect.

Ineligibility

Incapable of being eradicated.

They're bound to happen

The quality of being inexcusable; enormity forgiveness.

Inexorability

Unaccountableness

A. So intricate or entangled as to make escape impossible: an inextricable maze; an inextricable web of deceit.

Infallibility

""INFANTILIZE INFANTILE Of or pertaining to infancy, or to an infant; similar to, or characteristic of, an infant; childish; as, infantile behavior. as, infantile behavior.""

Infeasibility

By infinitesimals; in infinitely small quantities; in an infinitesimal degree.

The quality or state of being inflammable; inflammability.

Inflexibility

Informational

Funnel-shaped

INFUSIBLENESS Infusibility.

Inheritable

Inhospitality

Start-up processes

Bootstrap routines

In an inquisitorial manner.

Insatiability

The quality or state of being inscrutable; inscrutability.

Insensibility

The quality or state of being inseparable; inseparability.

In a meaningless way

Insociability

INSOLUBLENESS The quality or state of being insoluble; insolubility

Inspirational

Without delay

At once.

Singles

Institutional

""The view that the sanction of truth is its utility, or that truth is genuine only in so far as it is a valuable instrument.""

Piper, for one

Nathan Milstein or William Kapell.

Tuba player, for example

Means

Insubordinate

Intangibility

Integrability

Little calumnies can create reasonable doctrine

One who overrates the importance of the understanding.

Egghead's thing

Genius's power

Give reasonable form to

Use reasoning rather than emotions

Intelligentsia

Ability to be understood

BEHAVIORAL of or pertaining to behavior.

(Of things) that may be swapped over

Like some machine parts

Easy to swap out

CHANGEABLY In a changeable manner.

Like Ivy League games

Like some football games

Adjective for some athletic events

CORRELATED mutually related.

Intercorrelate

Intercultural

""DIVISIONAL That divides; pas, a divisional line; a divisional general; a divisional surgeon of police. as, a divisional line; a divisional general; a divisional surgeon of police.""

Plural or third person singular

""ELECTRONIC Of or pertaining to an electron or electrons; as, electronic energy.as, electronic energy.""

""INDIVIDUAL Not divided, or not to be divided; existing as one entity, or distinct being or object; single; one; as, an individual man, animal, or city. as, an individual man, animal, or city.""

Past tense or past participle

Interinfluence

""LACUSTRINE Found in, or pertaining to, lakes or ponds, or growing in them; as, lacustrine flowers.as, lacustrine flowers.""

Interlineation

""MODULATION The act of modulating, or the state of being modulated; as, the modulation of the voice. as, the modulation of the voice.""

Learning (of values or attitudes etc.) that is incorporated within yourself.

Throughout the world

Word with famous and known

How Olympic teams are made up.

NUCLEOTIDE a phosphate ester of a nucleoside; one of the monomeric components of DNA or RNA.DNA or RNA.

""PAROXYSMAL Of the nature of a paroxysm; characterized or accompanied by paroxysms; as, a paroxysmal pain; paroxysmal temper. as, a paroxysmal pain; paroxysmal temper.""

Interpellation

Inflected form of PERCEPTUAL Inflected form of PERCEPT something that is perceived

Interpersonal

""Between phalanges; as, interphalangeal articulations. as, interphalangeal articulations.""

POPULATION The act or process of populating; multiplication of inhabitants.

""PROVINCIAL Of or pertaining to province; constituting a province; as, a provincial government; a provincial dialect. as, a provincial government; a provincial dialect.""

Relating to grilling carried out on genial traitor

Questioning

""In the form of, or by means of, a question; in an interrogative manner.""

Like some class conflicts (wordplay)

Like some debate club meetings

Describing certain athletics

Intervalometer

VISIBILITY The quality or state of being visible.

Intolerable

Intracellular

Intracerebral

Intramuscular

Intransigeant

Adjective (-al)

Noun (-tion)

INTRAPRENEUR

Intravascular

""INTROSPECTION A view of the inside or interior; a looking inward; specifically, the act or process of selfexamination, or inspection of one's own thoughts and feelings; the cognition which the mind has of its own acts and states; selfconsciousness; reflection.""

""INTROSPECTIVE Inspecting within; seeing inwardly; capable of, or exercising, inspection; selfconscious.""

Invariability

""INVESTIGATION The act of investigating; the process of inquiring into or following up; research; study; inquiry, esp. patient or thorough inquiry or examination; as, the investigations of the philosopher and the mathematician; the investigations of the judge, the moralist. as, the investigations of the philosopher and the mathematician; the investigations of the judge, the moralist.""

Invincibility

Inviolability

INVIOLATENESS inviolate

INVISIBLENESS The quality or state of being invisible; invisibility.

The quality or state of being involuntary; unwillingness; automatism.

Immunity to harm or damage

IONOSPHERIC

IRASCIBLENESS irascible

IRRATIONALIST

Irrationality

Irreconcilable

Abstract noun (-ity)

The quality or state of being irrefragable; incapability of being refuted.

Quality of being irreparable.

The quality or state of being irrepealable.

A condition of great temptation

Superiority to opposition.

Madam lacks this no-U-turn quality

Irrevocable

IRRITABLENESS Irritability.