noun

dirt ingrained on the surface of something.

the windows were thick with grime

dirt,smut,soot,dust,mud,filth,mire,sludge,dross,pollution,muck,gunge,yuck,crud,goo,grot

verb

blacken or make dirty with grime.

the windows were grimed like a coal miner’s goggles

begrime,blacken,dirty,make grimy,make dirty,make sooty,stain,soil,befoul,defile,besmirch