Apparently a denominative from mah; properly, to question or hesitate, i.e. (by implication) to be reluctant -- delay, linger, stay selves, tarry.
see HEBREW mah
H4102. mahah
[מָהַהּ] verb only
Hithpalpel linger, tarry (compare Arabic slow walk, delay (†am.)); —
Hithpalpel Perfect1singular הִתְמַהְמָ֑הְתִּי Psalm 119:60; 3plural הִתְמַהְמְהוּ Judges 19:8; 1plural הִתְמַהְמָ֑הְנוּ Genesis 43:10; Imperfect יִתְמַהְמַהּ Habakkuk 2:3; ׳וַיִּתְמ Genesis 19:16; Imperative masculine plural הִתְמַהְמְהוּ Isaiah 29:9; Infinitive לְהִתְמַחְמֵהַּ Exodus 12:39; Participle מִתְמַהְמֵהַּ 2 Samuel 15:28; — linger, tarry, wait, of person, Genesis 19:16; 43:10 (J), Exodus 12:39 (E), Judges 3:26; 19:8; 2 Samuel 15:28; Isaiah 29:9; Psalm 119:60 (with לֹא, opposed to חַ֫שְׁתִּי); subject חָזוֺן vision Habakkuk 2:3
מְהוּמָה see הום. מְהוּמָן see אמן.
מְהֵיטַבְאֵל see יטב.