unthinkable

About 1.95 uses per million words.

Meaning

1. adjective That cannot be believed.
2. adjective Inconceivable or unimaginable; extremely improbable in a way that goes against common sense.
3. adjective Extremely improper; extremely at odds with norms of expected behavior.
4. noun Something, or various things collectively, that one dares not think about or do.

   do the unthinkable

Similar words

inconceivable unimaginable impossible out of the question inexplicable unbelievable incomprehensible improbable incredible untenable

Often followed by

that to in for without and as a happened

Word family

unthinkabilities unthinkability unthinkably