What does 避妊 mean?
避妊 is a Japanese noun meaning “contraception; birth control” in English. It is written as 避妊 in kanji, ひにん in hiragana, and hinin in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
避妊はちゃんとコンドームつけてたのよね？
You used a condom for birth control, right?