The unclued entries share a definition. Elsewhere, ignore an accent.

Across

1    Chap primarily revered among classic characters (5)
12    Barrow dropping us with United in gallery to cause a commotion (10)
13    Put a stop to women leaving a vessel I cast off (9)
14    Fine for Cantona? (4)
15    Deli stir fluid to make liquid again (8)
17    Said learned Cockney was criminal (5)
21    German soldier refuelling without English going over (11)
24    Like a fox taking ages to release bird (3)
26    Illness passed quickly, they say (3)
28    Fruit from bitter plant perhaps initially cut back (7)
29    Pill with pillbox, say, in Alberta’s place (8,3)
33    Take two...