do the unthinkable

To do something that would never be expected to be done, especially something particularly unorthodox or extreme. Lena was a stellar student until she did the unthinkable and dropped out of school. If they have any chance of winning this game, they're going to have to do the unthinkable and pull their star quarterback.

Farlex Dictionary of Idioms.

See also:

a fast talker
a/the feel of (something)
(I) wouldn't (do something) if I were you
a horse of another
a horse of another color
a horse of another colour
a straw will show which way the wind blows
a crack at (someone or something)
all right
(something) is one thing, (something else) is (quite) another

词组	do the unthinkable
释义	do the unthinkable do the unthinkable To do something that would never be expected to be done, especially something particularly unorthodox or extreme. Lena was a stellar student until she did the unthinkable and dropped out of school. If they have any chance of winning this game, they're going to have to do the unthinkable and pull their star quarterback. Farlex Dictionary of Idioms. See also: a fast talker a/the feel of (something) (I) wouldn't (do something) if I were you a horse of another a horse of another color a horse of another colour a straw will show which way the wind blows a crack at (someone or something) all right (something) is one thing, (something else) is (quite) another
随便看	rank on (someone or something) rank out rank someone rank someone out rank with rank with (someone or something) ransom rant rant about rant about (something) rant against rant against (someone or something) rant and rave rant and rave, to rant at rant at (someone or something) rap rap across the knuckles rap at rap at (someone or something) rap down rape rape culture rapid rap (one) on the knuckles