This meaning describes clothing, design, entertainment, or behavior considered cheap-looking, outdated, or embarrassing.
The decorations looked rather naff.
He wore a naff patterned shirt.
This broader informal meaning describes something regarded as bad, ineffective, or of little value.
The hotel room was completely naff.
That naff software crashed repeatedly.
Usually used as naff off, this rude British slang expression tells someone to leave or stop interfering.
He told the reporters to naff off.
Naff off and leave me alone.
