մխեմ

The root is մուխ- (mux-) as evidenced by the derivatives. Since Bugge usually connected with Ancient Greek μυχός (mukhós, “the inmost part of a place”), further also with Sanskrit मुख॑ (múkha, “mouth”), Proto-Germanic *smeuganą (“to creep, slip through or into”), Lithuanian smùkti (“to glide away”), Proto-Slavic *mъknǫti (“to move”), Latvian mukt (“knock off, slip”)^{[1][2][3][4][5][6][7]} but reconstructing a Proto-Indo-European source accounting for all these forms or even for Armenian and Greek alone is formally and semantically difficult.^[8][9][10]

We are likely dealing with a sound-symbolic formation.

մխեմ • (mxem)

1. (transitive) to drive in, thrust, force into

   մխել զձեռն ― mxel zjeṙn ― to stretch, to extend or hold out the hand

   մխել զձեռն յարիւն ուրուք ― mxel zjeṙn yariwn urukʻ ― to imbrue the hands in the blood of

   մխեաց զդաշոյնն ի լանջս նորա ― mxeacʻ zdašoynn i lanǰs nora ― he has plunged the dagger in his heart

2. (transitive, metallurgy) to quench (to dip metal in water for hardening)
3. (mediopassive, intransitive) to be driven, plunged into; to penetrate, enter; to meddle, get in; to begin, commence, undertake

   մխել բարկութեամբ ― mxel barkutʻeamb ― to be seized with rage, to be enraged

• մղխել (młxel) — post-Classical

• Armenian: մխել (mxel)
• →⇒? Old Georgian: მო-მუხ-ვა (mo-mux-va, “to cut, injure”)

• Awetikʻean, G., Siwrmēlean, X., Awgerean, M. (1837) “մխեմ”, in Nor baṙgirkʻ haykazean lezui [New Dictionary of the Armenian Language] (in Old Armenian), volume II, Venice: S. Lazarus Armenian Academy, page 283b
• J̌axǰaxean, Manuēl (1837) “մխեմ”, in Baṙgirkʻ i barbaṙ hay ew italakan [Armenian–Italian Dictionary], Venice: S. Lazarus Armenian Academy, page 991bc
• Petrosean, Matatʻeay (1879) “մխեմ”, in Nor Baṙagirkʻ Hay-Angliarēn [New Dictionary Armenian–English], Venice: S. Lazarus Armenian Academy, page 479b
• Petrosean, Matatʻeay (1879) “մխիմ”, in Nor Baṙagirkʻ Hay-Angliarēn [New Dictionary Armenian–English], Venice: S. Lazarus Armenian Academy, page 479b