Lose impetus (3,3,2,5)

Professional charges (4)

Programme for a definite course of action; strategy (8)

Circlet, small crown or garland: of the head (7)

Athenian Greek of old (5)

Pyrenean region known for its creamy sauce (5)

Pluck; fortitude (7)

Questioned the truth or validity of; disputed (8)

John ---- (1912-92), US avant-garde composer (4)

French name for Aachen, Charlemagne's capital (3-2-8)

Scottish island, largest town Rothesay (4)

Easily finished, that's all there is to it! (4,4,5)

Temporary substitute; makeshift (7)

Edible animal innards (5)

That's just not fair! (3,3,7)

Thug, Nina (anag) (8)

Extravagantly theatrical; histrionic (8)

Car journey aid: 9 document (4,3)

Cedar-like conifer but with deciduous leaves (5)

Big blow (4)