Synonyms and antonyms of Not possible in American Thesaurus

impossible (adjective)

if something is impossible, no one can do it or it cannot happen

unbelievable (adjective)

too unlikely to be true or believed

no-go (adjective)

impossible, not working well, or not allowed

there is no question of something ()

if there is no question of something, it definitely will not happen

be out of the question ()

used for saying that something is definitely not a possibility

impossibility (noun)

the fact of being impossible, or something that is impossible to do

hardly (adverb)

used when you think it is obvious that something is not true, not possible, not surprising, etc.

possibly (adverb)

used for emphasizing that something cannot happen or cannot be done

something will not work/start/open etc. ()

used for saying that you cannot make something do what it should do, although you have tried

with the best will in the world ()

used for saying that even if you want something very much or try very hard, it will still not be possible to do something

(just) not on ()

used for saying that something cannot be allowed or that it is impossible

make a silk purse out of a sow’s ear ()

to try to improve a person or object that cannot be changed

out (adverb)

informal if a particular idea, suggestion, or activity is out, it is not possible or it cannot be accepted

too good to be true/to last ()

so good that you cannot believe that such a situation is possible or can continue

will o’ the wisp (noun)

literary something that is impossible to achieve

within/beyond the capabilities of /someone/something ()

able/not able to be done by someone or something

you wish ()

used for telling someone that the thing that they want to happen is completely impossible