Synonyms of unthinkable in English:

unthinkable


See definition of unthinkable

adjective

1‘Beethoven is unthinkable without the tradition of western music’

SYNONYMS
unimaginable, inconceivable, unbelievable, incredible, beyond belief, highly unlikely, unheard of, implausible, illogical, impossible, beyond the bounds of possibility
ANTONYMS

likely, imaginable, plausible

2‘to me a lentil soup is unthinkable without lemon and olive oil’

SYNONYMS
highly undesirable, not to be considered, unconscionable, out of the question, absurd, unreasonable, preposterous, ludicrous, outrageous, shocking
informal not on
ANTONYMS

desirable