Proverbs 10:18

¹⁶ The labour of the righteous tendeth to life: the fruit of the wicked to sin.

¹⁷ He is in the way of life that keepeth instruction: but he that refuseth reproof erreth.

He that hideth hatred with lying lips, and he that uttereth a slander, is a fool.

¹⁹ In the multitude of words there wanteth not sin: but he that refraineth his lips is wise.

²⁰ The tongue of the just is as choice silver: the heart of the wicked is little worth.

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

Compare

BSB: The one who conceals hatred has lying lips, and whoever spreads slander is a fool.
KJV: He that hideth hatred with lying lips, and he that uttereth a slander, is a fool.
WEB: He who hides hatred has lying lips. He who utters a slander is a fool.
ASV: He that hideth hatred is of lying lips; And he that uttereth a slander is a fool.
DARBY: He that covereth hatred hath lying lips, and he that sendeth forth a slander is a fool.
BLB: The one covering hatred [has] lips of falsehood, and the one bringing forth slander, he [is] a fool.

ÅB: Den som skjuler hat, har falske lepper, og den som fører ut ondt rykte, han er en dåre.
OTB: De som skjuler hat med bedragerske ord og sprer baktalelse er tåpelige.
B1930: Den som skjuler hat, har falske leber, og den som fører ut ondt rykte, han er en dåre.

Proverbs 26:24–26
He that hateth dissembleth with his lips, and layeth up deceit within him;
Read in context
Psalms 55:21
The words of his mouth were smoother than butter, but war was in his heart: his words were softer than oil, yet were they drawn swords.
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2 Samuel 3:27
And when Abner was returned to Hebron, Joab took him aside in the gate to speak with him quietly, and smote him there under the fifth rib, that he died, for the blood of Asahel his brother.
Read in context
2 Samuel 13:23–29
And it came to pass after two full years, that Absalom had sheepshearers in Baal-hazor, which is beside Ephraim: and Absalom invited all the king’s sons.
Read in context
Psalms 15:3
He that backbiteth not with his tongue, nor doeth evil to his neighbour, nor taketh up a reproach against his neighbour.
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Psalms 101:5
Whoso privily slandereth his neighbour, him will I cut off: him that hath an high look and a proud heart will not I suffer.
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1 Samuel 18:21–22
And Saul said, I will give him her, that she may be a snare to him, and that the hand of the Philistines may be against him. Wherefore Saul said to David, Thou shalt this day be my son in law in the one of the twain.
Read in context
Psalms 12:2
They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.
Read in context