How do I solve 24 down in Daily Telegraph Cryptic 31236?

Question

Accepted Answer

24 down reads "Left direction for poorest" (5 letters); the answer is LEAST. 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.

Left direction for poorest (5)

24D — Left direction for poorest (5) — LEAST