利し, 鋭し: sharp / 敏し, 聆し: smart, clever / 疾し, 捷し: fast, quick / 疾し, 鋭し: powerful, intense

音: sound

unexpectedly, suddenly

陰: female genitalia; (by extension) male genitalia

(archaic) genitalia

水戸: A city in Ibaragi prefecture

on purpose, deliberately, intentionally

indicates that a word or a phrase is to be defined / (more emphatic) Synonym of と (to, “with”) / Short for とは思わなかった (to wa omowanakatta, “did not think that ...”).

even / even if, even though / however, whatever, whenever, whichever / no matter what

賭場: gambling den