Geez

ṣāmawa - to toil, labor, endure hardship, be wearied, tormented, vexed (CDG 558)

PES

*ṣmw - to toil, to suffer pain (CDG 558)

Cf. Soq. ṣámə ‘to die’, Arb. ṣmy ‘to die on the spot’ (Lane 1729).