Crossword clues for Make an effect. 7 letters:IMPAIRSMakes less effectiveIMPRESSMake an effect.HOGTIESMakes incapable of effective action.ENABLEMake effectiveSTRENGTHENMake more effective.SIGNMake legally effectiveIMPAIRMake less effectiveHONEMake more effectiveWATERDOWNMake less effectiveHONESMakes more effectiveWAHWAHEffect that makes instruments sound like a human voiceINVENTMake up new effect