לָשַׁןlâshan

use the tongue, only specifically, slander

Pronunciation: law-shan' · Hebrew/Aramaic (Old Testament) · H3960

Same root

לָשׁוֹןlâshôwn · H3956the tongue (of man or animals), used literally (as the instrument of licking, eating, or speech), and figuratively (speech, an ingot, a fork of flame, a cove of water)

Where it appears

Appears 2 times in the Bible.

Psalms 101:5 I will not tolerate people who slander their neighbors. I will not endure conceit and pride.
Proverbs 30:10 Never slander a worker to the employer, or the person will curse you, and you will pay for it.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).