Answer: sabotaged

AnswerCrossword Clue
SABOTAGEDUndermined by stealth
SABOTAGEDBrought to ruin
SABOTAGEDUndermined an operation
SABOTAGEDDid in
sabotageddeliberate injury to equipment or interference with production
sabotagedSABOTAGE, to destroy maliciously
sabotagedto injure or attack by sabotage