PS

*ŝyb - to have grey hair (SED I No. 66ᵥ)

Akkadian
šâbu - to become old (CAD Š₁ 19, AHw. 1224)
Hebrew
ŝyb - to be grey headed, old (HALOT 1318)
Mandaic
sab, sib - to be grey (MD 308)
Arabic
šyb - to become whitehaired, hoary (BK 1 1294, Lane 1627)
Geez
ŝeba - to turn grey (hair) (CDG 539)
Tigre
šäyäbä - to have grey hair (WTS 227)
Tigrinya
säyyäbä, šäyyäbä - incanutire (to turn gray) (TED 768, Bassano 1918: 237)
Selti
šēbätä - to have grey hair (EDG 572)
Wolane
šebätä - to have grey hair (EDG 572)
Zway
šībätä - to have grey hair (EDG 572)
Muher
šäbbätä - to have grey hair (EDG 572)
Masqan
šäbbätä - to have grey hair (EDG 572)
Soddo
šibbätä - to have grey hair (EDG 572)
Mehri
ŝyīb - to go white in the hair of the head (ML 390)
Jibbali
eŝŝeb - to have white hair (JL 259)