Romanian word surd comes from Proto-Indo-European *swer-

Detailed word origin of surd

Dictionary entry	Language	Definition
*swer-	Proto-Indo-European (ine-pro)	to speak, talk, to cut, pierce, fester, ‘fester, suppurate’ later ‘pierce, wound’, to protect, to guard
surdus	Latin (lat)	Deaf. Inattentive, unresponsive. Indistinct, dull, faint. Silent, noiseless, still.
surd	Romanian (ron)	Deaf.

Words with the same origin as surd