How do I solve 17 down in Times Cryptic 5220?

Question

Accepted Answer

17 down reads "Put up with champion" (5,3 letters); the answer is STAND FOR. It's a double-definition clue: two separate definitions of the same word sit side by side. No wordplay split and no indicators — both halves of the clue define the answer. The full step-by-step breakdown is on this page.

Put up with champion (5,3)

17D — Put up with champion (5,3) — STAND FOR