interjection
bye; see ya; have fun
Colloquial abbreviation of 行ってきます (ittekimasu), used when leaving home or a casual setting. Implies 'I'm off' and expects a response like 行ってらっしゃい. The gloss 'get going, now' reflects a more forceful or encouraging tone, but the core meaning is a casual farewell.
See also: 行ってきます
「いってき！」「いってらっしゃい。」
"Bye!" "See you later."
じゃ、いってき。
Well, I'm off.
The full, standard phrase said when leaving home; 行ってき is a shortened, very casual version.
The standard response to 行ってきます or 行ってき, said to someone leaving.
Contraction of 行ってきます (ittekimasu), literally 'I'll go and come back'.