"Nimechoka kwa sababu sikulala usiku"

Translation: I am tired because I did not sleep at night

[filixlan]

Why sikulala to say i did not sleep?

[AGreatUserName]

si- = 1st person negative ("I not") [negative equivalent of ni-]
-ku- = past tense negative ("did not") [negative equivalent of -li-]
-lala = sleep

[machieng]

are you asking for the breakdown of the word?

[5vZSXEt5]

Would pumzika be the opposite of choka?
Thanks