PWS

*mrḥ - to be proud, valiant (Kogan 2015: 462)

The root is most prominantly represented by PES *mrḥ ‘to guide, to lead’.

PES

*mrḥ - to guide, to lead (CDG 358; Kogan 2015: 462)

Syriac

marrāḥā - audacious; difficult (LSyr. 404, SL 831)

Arabic

mrḥ - to be proud and self-conceit, to walk with an elegant, proud and self-conceit gait (Lane 2705)