Slander

2Sa 19:27 And he hath slandered thy servant unto my lord the king; but my lord the king is as an angel of God: do therefore what is good in thine eyes.

Hebrew - H7270 - râgal [raw-gal']
A primitive root; to walk along; but only in specific applications, to reconnoitre, to be a tale bearer (that is, slander); also (as denominative from H7272) to lead about: - backbite, search, slander, (e-) spy (out), teach to go, view.

Vine's Expository Dictionary of N.T. Words
&lt1,,1228,diabolos>
an adjective, "slanderous, accusing falsely," is used as a noun, translated "slanderers" in 1 Tim. 3:11, where the reference is to those who are given to finding fault with the demeanor and conduct of others, and spreading their innuendos and criticisms in the church; in 2 Tim. 3:3, RV (AV, "false accusers"); Titus 2:3 (ditto): see ACCUSER, DEVIL.

Paul is speaking of those who hold the office of Deacon.
1Ti 3:11 Even so must their wives be grave, not slanderers, sober, faithful in all things.

Greek - G1228 diabolos [dee-ab'-ol-os]
From G1225; a traducer; specifically Satan (compare [H7854]): - false accuser, devil, slanderer.

It is the same word translated "false accusers" here.
2Ti 3:3 Without natural affection, trucebreakers, false accusers, incontinent, fierce, despisers of those that are good,

Tit 2:3 The aged women likewise, that they be in behaviour as becometh holiness, not false accusers, not given to much wine, teachers of good things;