Warning involving a threat (9)

Mind – acre (anag) (4)

Pay attention (4,4)

And that’s the end of it (in the US) (6)

Steep-sided valley (6)

Wider at the bottom (6)

Prominence (6)

Victory for Nelson at Trafalgar, say (8)

Coast, coin or card? (4)

Random (9)

Able (6)

A safe bet (6)

Pull a face (4)

Pond flower (5,4)

Refuse to answer questions so as to delay or prevent something (9)

Like a sour-tasting wine? (8)

Brightly-coloured flower, grown from a tuber (6)

Sound of gunfire (6)

The start (of an idea) (4)