adjective

free from dirt, marks, or stains.

the room was spotlessly clean

washed,scrubbed,cleansed,cleaned,polished,spotless,unsoiled,unstained,unspotted,unsullied,unblemished,immaculate,pristine,speckless,dirt-free,hygienic,sanitary,disinfected,sterilized,sterile,aseptic,decontaminated,healthy,pure,white,whiter than white,laundered,squeaky clean,as clean as a whistle

adverb

so as to be free from dirt, marks, or unwanted matter.

the room had been washed clean

verb

make clean; remove dirt, marks, or stains from.

clean your teeth properly after meals

wash,cleanse,wipe,sponge,scrub,mop,rinse,scour,swab,hose down,sluice (down),flush,polish,disinfect,shampoo,floss,lave,launder,dry-clean

noun

an act of cleaning something.

he gave the room a clean