inconceivably

Past all understanding

Inconceivably describes something beyond what the mind can grasp or believe.

It intensifies adjectives and adverbs to suggest extremity: inconceivably vast distances, inconceivably stupid decisions.

The word often carries implicit judgment—what's inconceivable to the speaker may simply be outside their experience or willingness to accept.

improbable

unthinkably

Beyond what seems possible

preposterously · absurdly · ridiculously · fantastically · outlandishly · unrealistically · incredibly · unimaginably · miraculously · extraordinarily

vast

immeasurably

Beyond ability to gauge

enormously · astronomically · cosmically · colossally · monumentally · titanically · staggeringly · mind-bogglingly · overwhelmingly · stupendously

incomprehensible

unfathomably

Beyond capacity to understand

bewilderingly · perplexingly · mystifyingly · confoundingly · puzzlingly · indecipherably · impenetrably · unintelligibly · cryptically · enigmatically

Opposites
cognitive possibility

inconceivablyconceivably

Within imagination's reach

imaginably · comprehensibly · understandably · clearly · obviously

likelihood/plausibility

inconceivablyplausibly

In believable manner

believably · probably · feasibly · credibly · reasonably

Family

inconceivable, inconceivability

Familiarity
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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G