行っていらっしゃい: alternative form of いってらっしゃい (itterasshai)

see you later (said by a person leaving, a stock phrase required by the Japanese etiquette, lit.: (after) going, I will come back)

run into, hit, strike

imperative of 出て行く (deteiku): get out! scram!

a 軍歌 (gunka, “war song”)

(humble) alternative form of いってきます (itte kimasu)

back and forth

(colloquial) Synonym of 行って来ます (itte kimasu, “see you later”)

to go and come back

Alternative form of 一筋縄では行かない (hitosujinawa de wa ikanai)