nonsense / meaninglessness

profound, deeply meaningful

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

a Japanese word of ancient Japanese origin (as opposed to a word borrowed from Chinese, or composed in Japan from Chinese-derived roots) / Japanese songs or poetry (such as tanka)