13-Letter Words Starting with I

""Incapability of being mixed, or mingled.""

The quality of being impalpable.

""Impossible to pass, cross, or overcome: impassable roads; impassable problems.""

The quality or condition of being impassible; insusceptibility of injury from external things.

""The quality of being impeccable; exemption from sin, error, or offense.""

IMPERCEPTIBLE Not perceptible; not to be apprehended or cognized by the souses; not discernible by the mind; not easily apprehended.

IMPERMISSIBLE Not permissible.

In an imperturbable manner; calmly.

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Something not able to happen

What cannot be

In an impracticable manner.

Unlikelihood

The state or quality of being improvable; improvableness.

INAPPRECIABLE Not appreciable; too small to be perceived; incapable of being duly valued or estimated.

""INCONCEIVABLE Not conceivable; incapable of being conceived by the mind; not explicable by the human intellect, or by any known principles or agencies; incomprehensible; as, it is inconceivable to us how the will acts in producing muscular motion. as, it is inconceivable to us how the will acts in producing muscular motion.""

""INCONTESTABLE Not contestable; not to be disputed; that cannot be called in question or controverted; incontrovertible; indisputable; as, incontestable evidence, truth, or facts. as, incontestable evidence, truth, or facts.""

In an inconvertible manner.

In an incorruptible manner.

The quality or state of being incredible; incredibleness.

Without weariness; without yielding to fatigue; persistently.

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In an indispensable manner.

INDISSOCIABLE

Incapable of being educated.

The lack of qualifications (for something)

Impossibility to be avoided or shunned; inevitableness.

""INEXHAUSTIBLE Incapable of being exhausted, emptied, or used up; unfailing; not to be wasted or spent; as, inexhaustible stores of provisions; an inexhaustible stock of elegant words. as, inexhaustible stores of provisions; an inexhaustible stock of elegant words.""

""The quality of being inexorable, or unyielding to entreaty.""

In an inexpressible manner or degree; unspeakably; unutterably.

Inability to make a mistake

Freedom from error

Never-wrong state

The state of being infeasible; impracticability.

""The quality or state of being inflexible, or not capable of being bent or changed; unyielding stiffness; inflexibleness; rigidity; firmness of will or purpose; unbending pertinacity; steadfastness; resoluteness; unchangeableness; obstinacy.""

Unending craving

""The state or quality of being insensible; want of sensibility; torpor; unconsciousness; as, the insensibility produced by a fall, or by opiates. as, the insensibility produced by a fall, or by opiates.""

The quality of being insociable; want of sociability; unsociability.

""INSUPPORTABLE Incapable of being supported or borne; unendurable; insufferable; intolerable; as, insupportable burdens; insupportable pain. as, insupportable burdens; insupportable pain.""

""INSUSCEPTIBLE Not susceptible; not capable of being moved, affected, or impressed; that can not feel, receive, or admit; as, a limb insusceptible of pain; a heart insusceptible of pity; a mind insusceptible to flattery. as, a limb insusceptible of pain; a heart insusceptible of pity; a mind insusceptible to flattery.""

The lack of a physical presence

The quality of being integrable.

The quality of being invariable; invariableness; constancy; uniformity.

The quality or state of being invincible; invincibleness.

The quality or state of being inviolable; inviolableness.

IRRECLAIMABLE Incapable of being reclaimed.

""IRRECOVERABLE Not capable of being recovered, regained, or remedied; irreparable; as, an irrecoverable loss, debt, or injury. as, an irrecoverable loss, debt, or injury.""

IRREPLACEABLE

In a manner or to a degree that can not be repressed.

So as not to be responsible.

In an irretrievable manner.