(typography) each mark of the pairs of iteration marks ゝ/ゞ and ヽ/ヾ, respectively used to repeat 清音 (seion)/濁音 (dakuon) hiragana and katakana

the same criminal

one for all, all for one

kill two birds with one stone, do one task and finish two or more goals (literally, “one stone, two birds”)

(obsolete) being surprised twice / (obsolete) more specifically, describes the appearance of a woman who has a beautiful figure from behind but has an ugly face

(grammar) a verbal conjugation class in which the verb stem ends in -i and consists of four alternating bases: -i, -iru, -ire, and -iyo/-iro

Kyūjitai form of 三位一体 (“Trinity”)

(idiomatic, proverb) be quick on the uptake, understand the whole situation from just a few clues

Alternative form of 十二単

(Christianity) the Trinity