How do I solve 7 down in Daily Telegraph Cryptic 31243?

Question

Accepted Answer

7 down reads "Old female goes on X frequently" (5 letters); the answer is OFTEN. 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.

Old female goes on X frequently (5)

7D — Old female goes on X frequently (5) — OFTEN