Probably from 'aman; faithful; Heman, the name of at least two Israelites -- Heman.
see HEBREW 'aman
הֵימָן proper name, masculine Heman (faithful, compare Aramaic מְהֵימָן, ) a wise man with whom Solomon is compared 1 Kings 5:11, where app. son of Mahol (Klo sons of the dance); named with 3 others, one being Ethan the Ezrahite; 1 Chronicles 2:6 a Heman is named with same 3+1 other, & all called sons of Zerah of Judah; Heman appears Psalm 88:1 also as the Ezrahite (see below זרח), compare Ethan above; in other passages Heman is a Levite; specifically Kohathite, son of Joel, called the singer (הַמְשׁוֺרֵר) 1 Chronicles 6:18 ("" Asaph v.6:24, Ethan v.6:29); Heman, Asaph & Ethan named as the singers (הַמְשֹׁרְרִים) 15:17, 19; compare Heman & Jeduthun 16:41-42, ("" Asaph 16:37); Heman, Asaph & Jeduthun 25:6; 2 Chronicles 5:12; 35:15; elsewhere וִידוּתוּן וְהֵימָן סָף אָ בְּנֵי 1 Chronicles 25:1 compare 25:4; 25:4; 25:5; 25:5; הֵימָן בְּנֵי2 Chronicles 29:14 ("" ידוּתוּן בְּנֵי); — 25:5 Heman is called הַאֱלֹהִים רֵי בְּדִבְ הַמֶּלָח חֹזֵה (compare Asaph 29:30, Jeduthun 35:15). — On question of identity of Heman in these various connections, see Thes Comm.
הֵימָן proper name see אמן.