Solution

MUM

4 clues

Mute

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Very easy
Sources: Boatload Puzzles
Topics: Sounds - Hearing

Other solutions to Mute

Not talking

Word class: Common adjective
Nature of clue: Description
Difficulty: Very easy
Sources: Boatload Puzzles
Topics: Sounds - Hearing

Tight-lipped

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Very easy
Sources: Boatload Puzzles
Topics: Sounds - Hearing

Other solutions to Tight-lipped

Wordless

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Very easy
Sources: Boatload Puzzles
Topics: Sounds - Hearing

Words are categorized by artificial intelligence: there can be mistakes.