Answer: nouse

AnswerCrossword Clue
NOUSE"Forget it!"
NOUSE"It's ...!" (despairing cry)
NOUSE"It's ...!" (cry of despair)
NOUSECry of despair
NOUSE'It's --!' (quitter's cry)
NOUSE"It's ...!" (defeated cry)
NOUSE"It's ...!" ("I give up!")
NOUSE"It's fruitless"
NOUSE"... crying over spilt milk"
NOUSEOf ... (ineffectual)
NOUSEUnavailing
NOUSEUnavailing.
NOUSEOf ... (ineffectual).
NOUSEFutile.
NOUSEHave ... for.
NOUSE"It's ..!" (cry of despair)
NOUSE"It's ..!" (quitter's comment)
NOUSE"It's ...!" statement of resignation
NOUSEOf ... (a waste of time)
NOUSEFruitless
NOUSEHopeless one's remark
NOUSEPointless
NOUSE"We tried everything"
NOUSEFutile
NOUSE"It'll never work"
NOUSE"It's a waste of time"
NOUSE"It's ..!" ("We're doomed!")
NOUSE"Don't even bother"
NOUSEHopeless