(baseball) high and inside; a pitch thrown near the top the strike zone, relatively close to the batter / short for インターハイ (“inter-high school sports tournament”).

(slang, ACG) simple-minded heroine

incel

to go to bed (with someone)

going to bed (with someone)

implant (anything surgically implanted in the body), usually dental implants

illegitimacy (being born out of wedlock)

a privately-owned ricefield, especially one under the historical 律令 (Ritsuryō) system

Kyūjitai form of 私鉄 (“private railway”)

(formal) we, us