Answer: miscarry

AnswerCrossword Clue
MISCARRYGo awry, as a plan
MISCARRYFail
MISCARRYFail, planwise
miscarry(of a pregnant woman) Have a miscarriage
miscarry(of a letter) Fail to reach its intended destination
miscarry(of something planned) Fail to attain an intended or expected outcome
miscarryto be unsuccessful