Question 1

What does "preaching to the choir" mean?

Accepted Answer

Trying to persuade or convert people who already agree with you.

Question 2

How do you use "preaching to the choir" in a sentence?

Accepted Answer

Telling climate scientists about global warming is preaching to the choir.

Question 3

Is "preaching to the choir" formal or informal?

Accepted Answer

"preaching to the choir" is register-neutral — appropriate in both casual and formal contexts. Common in debates and activism; used when a speaker's audience already shares their views.