Dirty means something has dirt, mud, or dust on it. It is not clean and needs cleaning. We use it to talk about things or places that are messy.
My shoes are dirty after the walk.
The table is dirty with food crumbs.
Dirty can describe words or actions that are rude or not polite. It often means that something is sexual or not correct in a moral way.
He told a dirty joke at the party.
She used dirty words in anger.
Dirty means water, air, or land is not clean because of chemicals or waste. It can make things unsafe and unhealthy.
The river is dirty with factory waste.
Dirty water is bad to drink.
Dirty describes things that are about sex in a way that is not polite or proper. It is often used for jokes or movies.
They watched a dirty movie last night.
He likes dirty jokes with friends.
Dirty can describe a way of talking or looking that is sexual or teasing. It is informal and used in special situations.
She gave him a dirty look and smile.
He used a dirty voice in the song.
Dirty in technology means a signal has extra noise that makes it unclear. It can cause problems in machines or communication.
The dirty signal caused errors in data.
Dirty electricity affects home devices.
