How do I solve 10 across in Daily Telegraph Cryptic 31253?

Question

Accepted Answer

10 across reads "An important first for subversive?" (9 letters); the answer is ANARCHIST. 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.

An important first for subversive? (9)

10A — An important first for subversive? (9) — ANARCHIST