קָטַל
he killed
Qal
(simple form)
simple action
נִקְטַל
he was killed/he killed himself
Niphal
(nun prefix)
passive/reflexive
קִטֵּל
he slaughtered
Piel
(doubling 2nd cons.; hireq under 1st cons.)
intensive
קֻטַּל
he was slaughtered
Pual
(doubling 2nd cons.; qibbuts under 1st cons.)
passive intensive
הִקְטִיל
he caused to kill
Hiphil
(הִ prefix)
causative
הָקְטַל
he was caused to kill
Hophal
(הָ prefix)
passive causative
הִתְקַטֵּל
he killed himself/he repeatedly killed
Hithpael
(הִתְ prefix, doubling 2nd consonant)
Reflexive/Iterative/Reciprocal