1: Characteristic of old door, mouse. (9)
2: Reportedly regret cutting remark in quarrel (7)
3: Waterhouses partner slashes discounts (5,4)
4: Location of cheating, fiercer gender (4,9)
5: Prepare canvas with a colour like red, blue or yellow? (5)
6: Jack's described part of a church (5)
7: Old Testament character, New Testament incident (5)
9: Secretly include railroad in family future (13)
14: Rip apart and mostly reject old ballplayer (9)
15: Irresponsible friends show up merry (9)
18: It's over, over, over, kept apart by past payment (7)
19: Pathological bumbler holds a record (5)
20: Small room leader of orchestra needed for instrument (5)
21: A vine sometimes can seem green (5)