This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

異性

Reading

Kana: いせい
Romaji: isei
Kana
Romaji

Definitions

1

the opposite sex

See also: 同性
2

isomerism

(Chemistry term)

Kanji

Readings: イ、 こと、 こと.なる、 け
Meanings: uncommon, different, queerness, strangeness, wonderful, curious, unusual
Readings: セイ、 ショウ、 さが
Meanings: sex, gender, nature

Example Sentence

彼女(かのじょ)異性(いせい)(まえ)では非常(ひじょう)()ずかしがる。
➥She feels very shy in the presence of the opposite sex.
Full Entry➤