verb

make or become less.

the new law is expected to diminish the government’s chances

decrease,decline,reduce,lessen,shrink,contract,grow smaller,fall off,drop off,slacken off,fall,drop,sink,slump,plummet,plunge,hit the floor,go through the floor,go downhill,curtail,cut,cut down,cut back,prune,pare down,lower,narrow,constrict,restrict,limit,curb,check,blunt,weaken,make weaker,erode,undermine,sap,subside,wane,abate,dwindle,fade,slacken,moderate,ebb,recede,die away,die down,die out,peter out,tail off,cool off,let up,fizzle out,settle down,come to an end,remit