hypothetical and imperative forms of 行く (iku, yuku) [godan]

going

What you like to do, you will do well. To improve your skills in something, you must enjoy doing it.

mischievous

warlike, bellicose

(euphemistic, slang) pedophilia (sexual or romantic feelings directed at children)

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

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

七七日: the forty-ninth day after a person dies; the Buddhist memorial service that occurs forty-nine days after a person dies

there's no accounting for taste