History
History
Synonyms
UK
US
Meaning:
improbable

not likely to be true or to happen

not likely

rare

not often seen, found, happening etc; (of meat) cooked so that the redness and juices are kept

exceptional, infrequent

strange

difficult to accept; surprising because not known, seen, heard etc before

deviating, unfamiliar

uncommon

unusual (and so interesting)

very different

UNHEARD OF as in Wiktionary
UNHEARD OF as in Wikipedia