undreamable

Cannot be envisioned

Undreamable describes something so extreme, strange, or unprecedented that it lies beyond what imagination can conjure—even in dreams, where anything should be possible.

The word emphasizes radical impossibility: an undreamable horror, undreamable wealth.

Often interchangeable with unimaginable, but undreamable invokes the specific failure of the dreaming mind.

inconceivable

unthinkable

Too terrible to contemplate

ungraspable · unknowable · inexplicable · ineffable · inexpressible · indescribable · unspeakable · unforeseeable · impenetrable · inscrutable

impossible

unattainable

Impossible to acquire

unreachable · insurmountable · insuperable · unfulfillable · unwinnable · infeasible · impracticable · unworkable · hopeless · beyond reach

limitless

boundless

Without any boundaries

unfathomable · inexhaustible · unbounded · vast · immeasurable · fathomless · limitless · illimitable · uncharted

Opposites
imaginability

undreamabledreamable

Able to be imagined

imaginable · conceivable · thinkable · fathomable · visualizable

possibility of aspiration

undreamabledreamable

Able to be imagined

attainable · achievable · within reach · possible · reachable

Family

dream, dreams, dreamed, dreaming, dreamer, dreamers, dreamlike, dreamland, daydream

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