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)