Crossword Genius

Declare formally to be true (6)

Ross

I believe the answer is:

affirm

(Other definitions for affirm that I've seen before include "State as a fact, assert" , "Substantiate" , "Declare, assert" , "Solemnly declare" , "Confidently put" .)

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.