Old Aramaic

ḳtl - to kill (DNWSI 1006)

Forms with non-emphatic ṭ cease to be attested in post-OArm. dialects. A well-known exception is ykṭlwk in KAI 225:11, whose non-emphatic k is highly unusual and remains to be explained.

PWS
*ḳtl - to kill (Kogan 2015:395)