Words

Syriac
yatmā - orphan (LSyr. 312, SL 589)
Syriac
yatrā - rope; bowstring; cord; beam (LSyr. 313, SL 590)
Syriac
yawmā - day (LSyr. 299, SL 568)
Syriac
yawnā - dove (LSyr. 300, SL 568)
Syriac
zarˁā - seed; sowing; offspring, family (LSyr. 207, SL 400)
Syriac
zeblā - dung (LSyr. 187, SL 363)
Syriac
zugallā - squab (LSyr. 188, SL 370)
Syriac
zḳp - to rise up; to suspend, hang (LSyr. 204)
Syriac
zulbānā, zəlūbānā - generative organ (of deer and horse) (LSyr. 197)

Probably related, with -l- of obscure origin.

Syriac
zmr - to sing; to pipe (LSyr. 199, SL 386)