turn tail
Verb
Meaning
flee; take to one's heels; cut and run
Source: WordNetSynonyms
Antonyms
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Hyponyms
Examples
If you see this man, run!
The burglars escaped before the police showed up
Although he had promised Carolinians that the cowardly Northerners would turn tail and run at the first sight of Southern swords, he lost one of his sons to a Yankee bullet and another to a wasting disease contracted during the war.
At this point, Luke has so many voices in his ear insisting that he’s close to losing, it’s no wonder that his reaction to Vader’s big reveal is to turn tail and run as fast as he can.
In the wild, it can turn tail and run, but in its cage, all it can do is try to bite or at least act like it’s going to bite you.
Something Ward didn't bank on was that the yellow bellied elves would turn tail forcing the wolves to flee or face defeat.