Crossword Puzzle Constant interrupter

Clue: Constant interrupter

Taught by constant repetition (INCULCATED with 10 letters)
Constantly confined con (LIFER with 5 letters)
Constant sufferers (MARTYRS with 7 letters)
Second Council of Constantinople year (DLIII with 5 letters)
Interrupter of Dagwood's naps (ELMO with 4 letters)
Constantine and Hadrian (EMPERORS with 8 letters)
" . . . constant as ___": Shak. (THENORTHERNSTAR with 15 letters)
Constantly stewed dude (SOT with 3 letters)
Dream interrupters (ALARMS with 6 letters)
Butcher's knife that constantly gets misplaced? (WAYWARDCLEAVER with 14 letters)