Easton's Bible Dictionary (1897)
Severe, a eunuch or chamberlain in the palace of Ahasuerus, who conspired with another to murder him. The plot was detected by Mordecai, and the conspirators were put to death (Esther 2:21; 6:2).
Smith's Bible Dictionary (1863)
(strictness), one of the two eunuchs whose plot to assassinate Ahasuerus was discovered by Mordecai. (Esther 2:21; 6:2) He was hanged.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
TE'RESH (severe), one of two eunuchs who conspired against Ahasuerus. Esth 2:21; Esth 6:2.