almost unheard of

adjective

Roget 137: unfrequent^†, infrequent; rare, rare as a blue diamond; few etc. 103; scarce; almost unheard of, unprecedented, which has not occurred within the memory of the which has not occurred within the memory of the oldest inhabitant, not within one's previous experience; not since Adam^†.    scarce as hen's teeth; one in a million; few and far between.    ... show more

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