Proverbs 17:27

25 A foolish son is a grief to his father, and bitterness to her that bare him.

26 Also to punish the just is not good, nor to strike princes for equity.

He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.

28 Even a fool, when he holdeth his peace, is counted wise: and he that shutteth his lips is esteemed a man of understanding.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
A man of knowledge restrains his words, and a man of understanding maintains a calm spirit.
KJV
He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.
WEB
He who spares his words has knowledge. He who is even tempered is a man of understanding.
ASV
He that spareth his words hath knowledge; And he that is of a cool spirit is a man of understanding.
DARBY
He that hath knowledge spareth his words; and a man of understanding is of a cool spirit.
BLB
The one restraining his words [is] one knowing knowledge, [and] calm of spirit [is] a man of understanding.
ÅB
Den som er sparsom med sine ord, er klok, og den koldsindige er en forstandig mann.
OTB
Den som har kunnskap bruker ord sparsomt, og den med en rolig ånd er en person med forståelse.
B1930
Den som er sparsom med sine ord, er klok, og den koldsindige er en forstandig mann.

Study notes (Tyndale)

Original text and word study

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