(chiefly of animal or vegetable matter) decay or cause to decay by the action of bacteria and fungi; decompose

the chalets were neglected and their woodwork was rotting away

caries sets in at a weak point and spreads to rot the whole tooth

make fun of; tease

has anybody been rotting you?

the process of decaying

the leaves were turning black with rot

a process of deterioration; a decline in standards

there is enough talent in the team to stop the rot

it was when they moved back to the family home that the rot set in

nonsense; rubbish

don't talk rot

‘Rot!’ she said with vehemence