IPA: /ɡrʌf/
KK: /grʌf/
Rough or stern in manner, often sounding harsh or brusque.
His gruff voice made it clear he was not in the mood for conversation.
Comparative: gruffer
Superlative: gruffest
To speak in a rough or low voice that sounds unfriendly or harsh.
He gruffed at the children to be quiet.
Past: gruffed
Past Participle: gruffed
Gruff originates from Middle English 'gruf', meaning rough or harsh. It is related to the Old English 'gruf', which also means rough or coarse. The word describes a rough or brusque manner of speaking or behaving.
Think of someone speaking in a 'rough' manner — that's why 'gruff' means having a rough or harsh tone.