Crossword clues for It's guaranteed to work:SURETO__ work (guaranteed)CANTFAILGuaranteed to workFOOLPROOFMETHODIt's guaranteed to workCANTFAILIs guaranteed to workSUREFIREGuaranteed to workFOOLPROOFGuaranteed to workFAILSAFEGuaranteed to workSPECWork on ___ (do freelance projects without a guarantee of payment)