How do I solve 10 across in Times Cryptic 29541?

Question

Accepted Answer

10 across reads "Object lesson no longer enough" (7 letters); the answer is EXAMPLE. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Object lesson no longer enough (7)

10A — Object lesson no longer enough (7) — EXAMPLE