infrequent
🇺🇸
/ɪnˈfriːkwənt/
🇬🇧
/ɪnˈfriːkwənt/
Something that happens only a few times or not very often.
Eruptions of the volcano are infrequent, so we were lucky to witness one.
噴火は稀な現象なので、私たちはその一次を目撃することができたのは幸運だった。