Most precious item under heaven; irreplaceable

eleven o'clock

twenty-one; 21

carbon monoxide

(mythology, Shinto) the Japanese god of the forge, metalcraft, and blacksmithing

once again, once more

a Classical Japanese adjective with ク活用 (ku-katsuyō, “ku-inflection”)

(phonology) the lack of any phonemic pitch accent in certain dialects of Japanese (all words have the same accent)

ceremonial hand clapping (tejime) of 3 claps, 3 claps, 3 claps, 1 clap, with a short pause between clapping / one clap at the end a cheer

Have a nice day!