PWS

*ṣmm - to be deaf, to have a damaged ear (SED I No. 64ᵥ; Kogan 2011: 231)

Hebrew
ṣummām - a person whose auricles are a shapeless mass (Jastrow 1268)
pB.
Syriac
ṣammā - deaf mute (LSyr. 631, SL 1291)
Arabic
ṣmm - to be deaf (BK 1 1366, Lane 1722)
Geez
ṣamma - to be deaf, dumb, not understand (CDG 557)
Geez
taṣamama - to keep silent, not listen, not answer (CDG 557)
Tigre
ṣämmä, č̣ämmä - to be deaf (WTS 634, 623)
Tigrinya
ṣämämä - assordire (to become deaf) (TED 2555. Bassano 1918: 952)
Amharic
č̣əmm alä - to become quiet, silent; to hum, buzz (ears) (AED 2204)
Chaha
ač̣č̣äma-m - to overhear, eavesdrop, not answer having been called (EDG 137)
Ezha
ač̣č̣ämma-m - not to answer after having been called (EDG 427)
Endegen
(a)č̣ämmā - not to answer after having been called (EDG 175)
Ennemor
ač̣č̣ämā - not to answer after having been called (EDG 298)
Gyeto
ač̣č̣ämā - to overhear (EDG 656)
Muher
ač̣č̣ämma-m - to overhear (EDG 1108)
Masqan
(ač̣)č̣emma - to listen attentively (EDG 773)
Gogot
(at)č̣emma-m - to listen attentively (EDG 556)