14-Letter Words Starting with I

IATROGENIC

In visionary way, decide a list I call, yet not entirely

In an unacceptable way

By way of illustration or elucidation.

Without method; confusedly; unsystematically.

IMMUNOGENIC

I wave - interrupting myself with skill - to show no chance of leaks

The quality or state of being impregnable; invincibility.

The quality of being impressible; susceptibility.

The quality or state of being inalienable.

The quality of being unalterable or unchangeable; permanence.

In an inarticulate manner.

INAUTHENTIC

Incandescent

Inconclusive

Inconsequent

""INCONSIDERABLE Not considerable; unworthy of consideration or notice; unimportant; small; trivial; as, an inconsiderable distance; an inconsiderable quantity, degree, value, or sum. as, an inconsiderable distance; an inconsiderable quantity, degree, value, or sum.""

In an inconsistent manner.

In an inconvenient manner; incommodiously; unsuitably; unseasonably.

""Impossible to define, describe, or analyze. See Synonyms at unspeakable .""

INDEMONSTRABLE Incapable of being demonstrated.

INDESTRUCTIBLE Not destructible; incapable of decomposition or of being destroyed.

""INDETERMINABLE Not determinable; impossible to be determined; not to be definitely known, ascertained, defined, or limited.""

Ineffectualness.

Not to be avoided or escaped; inevitable: "Those war plans rested on a belief in the ineluctable superiority of the offense over the defense" (Jack Beatty).

Inexpressive

Infelicitous

Inflectional

The quality of being inheritable or descendible to heirs.

Insecticidal

The quality or state of being inseparable; inseparableness.

By means of an instrument or agency; as means to an end.

In an insufficient manner or degree; unadequately.

In an intellective manner.

In a brainy manner

Anagrammatised, it'll neatly clue 'how geniuses excel'

INTENSIONAL

The quality or state of being intentional; purpose; design.

""Intercommunication; community of possessions, religion, etc.""

Science of measurements using light fringe effects

""FERTILITY The state or quality of being fertile or fruitful; fruitfulness; productiveness; fecundity; richness; abundance of resources; fertile invention; quickness; readiness; as, the fertility of soil, or of imagination. as, the fertility of soil, or of imagination.""

In an intermediate manner; by way of intervention.

In a sporadic manner

(Happening) with pauses now and then

So as to occur at irregular intervals

Between Earth and Venus, for example

Rent a party line, perhaps, for such really long-distance calls (wordplay)

Fabricated party lantern ie out of this world

INTERPRETIVE Interpretative.

PUPILLARY Of or pertaining to a pupil or ward.

Interrelated

SEXUALITY The quality or state of being distinguished by sex.

STERILITY The quality or condition of being sterile.

Interstitial

The quality of being intolerable; intolerableness.

Batting quietly under strain perhaps, in stubborn fashion

How unwavering person acts during passage, mostly without roughness

Without an object following; in the manner of an intransitive verb.

Introversive

""IRRECONCILABLE Not reconcilable; implacable; incompatible; inconsistent; disagreeing; as, irreconcilable enemies, statements. as, irreconcilable enemies, statements.""

The state or quality of being irreducible.

Impossible to refute or disprove; incontrovertible: irrefutable arguments; irrefutable evidence of guilt.

The quality or state of being irremovable; immovableness.

In an irreproachable manner; blamelessly.

The state or quality of being irrevocable; irrevocableness.

ISENTROPIC Having equal entropy.