dirtier

ˈdəːti

adjective

covered or marked with an unclean substance.

a tray of dirty cups and saucers

soiled,grimy,grubby,filthy,mucky,stained,unwashed,greasy,smeared,smeary,spotted,smudged,cloudy,muddy,dusty,sooty,unclean,sullied,impure,tarnished,polluted,contaminated,defiled,foul,unhygienic,insanitary,unsanitary,cruddy,yucky,icky,manky,gungy,grotty,bogging,befouled,besmirched,begrimed,feculent