1. comparative form of dirty; more covered with dirt, mud, or unwanted matter
2. comparative form of dirty; more morally corrupt or dishonest
Usage: informal

Examples

• His clothes got dirtier as he worked in the garden.
• The kitchen floor was dirtier than I expected.
• After the rain, the car became even dirtier.
• The politician’s campaign tactics grew dirtier each week.
• This bathroom is dirtier than the one upstairs.
• Her hands were dirtier after fixing the engine.