stoop to

stoop to (something)

To do something below a certain standard of dignity, principles, or integrity. Don't stoop to his level. Just ignore him. I can't believe he would stoop to spreading gossip like that. I lost faith in the news site when they stooped to posting vacuous, clickbait-driven trash articles.
See also: stoop
Farlex Dictionary of Idioms.

stoop to

Condescend to something beneath one's dignity, as in She wouldn't stoop to listening to that obnoxious gossip. [Second half of 1500s]
See also: stoop
The American Heritage® Dictionary of Idioms by Christine Ammer.

stoop to

v.
To do something degrading or reprehensible to achieve one's ends: It's a shame that the museum has to stoop to cheap gimmicks in order to attract visitors.
See also: stoop
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • stoop to (something)
  • stoop to doing
  • stoop over
  • upon my word
  • (upon) my word
  • my word!
  • stoop
  • heavy heart, a
  • stoop down
  • don't sleep on (someone or something)
References in periodicals archive
Is there no depth Cameron and his cronies will not stoop to in their attempts to scare the voters of this country into voting to remain in the EU.
That bare form could be quite useful, given that Stoop To Conquer was formerly a decent staying handicapper on the Flat and he was well fancied to make a winning hurdle debut at Ludlow.
A strong breeze helped give Doncaster the early play but Lions broke from a scrum, Jon Boden putting in Sam Stoop to make it 5-0 on six minutes.
England's coach Stuart Lancaster was among the sold-out crowd at The Stoop to cast an eye over Harlequins' exciting youngsters.
'Stoop To Conquer will act on the ground and stays well.
But organised racism is one of the most shameful activities a community member can stoop to.