1: Lincoln, an emotional actor, embraces supporter (7)
2: Zero writing for 'humble' Wilbur's speech? (7)
4: Popular buzz over an animal (7)
5: Seal simpers forlornly (7)
6: Part of American's eerie pronouncement after a miracle (1,3,3)
7: Underworld boss can be found among crazy sun-worshippers (7)
10: Sounds like everything: a bore (3)
14: Deviant fellow following Esther Williams at times (9)
15: Box put on line for bird (7)
16: Tutus can serve to conceal Donatello, Leonardo, Michelangelo, and Raphael, say (7)
17: Scandinavian seafarers' six greatest leaders (7)
18: Cretins wrecked the water tank! (7)
19: Rejections concern enthusiasts (7)
20: Toxin obtained from coarse nicotine (7)
22: Terrier shows how to stray (3)