"___ be an honor"

ITD

Think of the phrase a knight might say when accepting a noble title with humility.

This clue is a fill-in-the-blank for the phrase "It’d be an honor," where "it’d" is the contraction of "it would." The answer is written as "ITD" because crosswords often drop apostrophes in contractions to fit the grid. The missing word is a casual way to say "it would," making the full sentence a polite or formal response to an honor or request.