Answer: blewit

AnswerCrossword Clue
BLEWITLet one get away
BLEWITScrewed up
BLEWITMessed up
BLEWITDropped the ball
BLEWITBlundered
BLEWITErred big-time
BLEWITMissed a golden opportunity
BLEWITScrewed up big-time
BLEWITFailed