1: Unfortunately, given to nay-saying (7)
2: Carries most of sea-bird back. (3)
3: Call on telephone about lock (7)
4: One who reads each consumer (7)
5: Decimal, in many cases (5)
6: Examiner for each drug addict (7)
8: People who put their kids to bed in fatigues? (7)
10: Stopped? No somehow deferred (9)
12: Staggering by, notices something offensive (9)
15: Young birds or seals may be heard (7)
16: Dangerous spitter sees loco and van destroyed (7)
17: A monster making some angry phone-calls (7)
18: Nits are possibly more unpleasant (7)
19: Pen opening regularly, bearing volatile, flammable liquid (7)
21: Uneven ships cable made from hemp (5)