armchair theory; speculative argument; an idea with no practical importance

(informal) Short for 既婚女性 (kikon josei, “married woman”).

gender identity disorder

(disaster prevention) Short for 木造住宅密集地域 (mokuzō jūtaku misshū chiiki, “densely built wooden house area”).

lie detector, polygraph

(Internet slang) Twitter

公益事業: public work

generation of a royal family / era, age, decade

charge, fare, rate, fee, price, rent / (indicating years spanning a specific period) -ies, -hundreds

machines, especially vehicles or computers