airtight

room (of a house or hotel), chamber, apartment, flat / (sumo) a stable where rikishi live and train together under a shisho oyakata (stable master)

perfect, completed

completeness / perfection

an adult son residing with his parents; generally has not yet or can not come into family inheritance / a female servant working in a daimyō, ōoku, or other high-ranking house

room rent

at-home clothes

(Internet slang) dirty room

perfectionism

(computing theory) Turing complete