How do I solve 10 across in Times Cryptic 29567?

Question

Accepted Answer

10 across reads "Where louse develops, surely?" (5 letters); the answer is INNIT. 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.

Where louse develops, surely? (5)

10A — Where louse develops, surely? (5) — INNIT