part / section / division / department / club

The three 密 (mitsu)s that should be avoided in order to avoid infection during the 2020 coronavirus pandemic, promoted by the Japanese government, translatable as "the three C's": 密(みっ)閉(ぺい) (mippei, “closed spaces”), 密(みっ)集(しゅう) (misshū, “crowded spaces”), 密(みっ)接(せつ) (missetsu, “close-contact settings”).

secret ceremonies

rage

rage

secret numbers

a hot spring one has discovered that he/she wishes to keep secret from others, a secret hot spring

secret matter

The hiragana syllable ぶ (bu). Its equivalent in katakana is ブ (bu).

Classical form of びる (biru, “to act like”)