everything

semantics (as a field of study), semasiology

(colloquial) Clipping of 意味深長 (imishinchō).

(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

meaningless

meaningful; suggestive; significant

the hours after sunset until midnight, collectively: dusk, evening, and night / the eve of an event, especially of a festival

Shu (a former state and former dynasty in ancient China)