(idiomatic) unhesitatingly without dispute

a univalve

in kambun, a type of kaeriten in which the reading order is marked with numbers 1, 2, 3... indicating the order

once-in-a-lifetime (event)

the very same person

being in complete harmony, a harmonious combination or blend, a complete whole

(grammar) Short for 上一段活用 (kami ichidan katsuyō): upper monograde conjugation

regard something or someone as the same

viewing and treating as one

(dated) something that stands out among many other things / (figuratively) a single woman among many men