Words

Arabic
masḫarat- - one who mocks at, scoffs at (Lane 1324)
Arabic
skn - be be calm, to dwell (BK 1 1115, Lane 1392)
Arabic
sikkīn- - knife (Lane 1304)
Arabic
skr - to become inebriated (Lane 1390)
Arabic
skr - to dam, stop up (BK 1 1113, Lane 1391)
Arabic
sakar- - alcoholic drink (Lane 1391)
Arabic
skt - to be silent (Lane 1389)
Arabic
silˁ- - a like, a fellow (Lane 1407)
Arabic
sulaˁ- - leprosy (BK I 1124)
Arabic
ˀaslaˁ- - leper, who has scaly skin (BK I 1125)

The by-form with γ in Arb. permits an alternative reconstruction with *γ as the third radical since the rest of the languages do not distinguish between the reflexes of *ˁ and *γ.