Crossword Puzzle Done without due consideration

Clue: Done without due consideration

Either "Unforgettable" duet singer (COLE with 4 letters)
Add stars, after careful consideration (RERATE with 6 letters)
Invitee of a duel attendant? (SECONDGUEST with 11 letters)
Dueler's move (LUNGE with 5 letters)
Club dues (FEES with 4 letters)
James ___, duettist on the 1982 #1 hit "Baby, Come to Me" (INGRAM with 6 letters)
Donee's opposite (GIVER with 5 letters)
Duel (with) (CROSSSWORDS with 11 letters)
Software designer's consideration (USER with 4 letters)
How duelists begin (BACKTOBACK with 10 letters)