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妹君 (いもうとぎみ) Japanese meaning | Kotomora
Meanings 1
noun
(younger) sister (honorific)
honorific or respectful (sonkeigo) dated term
Honorific term for someone else's younger sister. Dated and now mostly replaced by 妹さん in modern speech, but still encountered in historical or formal contexts.
あの 方かた は 妹いもうと 君ぎみ で いらっしゃい ます か 。
Is that person your younger sister?
Similar words 妹いもうと さん Modern, neutral-polite term for someone else's younger sister, used in everyday conversation. 妹君 is more formal and dated.
妹いもうと Plain term for one's own younger sister. 妹君 is honorific and refers to another person's sister.
Etymology Compound of 妹 (いもうと, 'younger sister') and 君 (ぎみ, an honorific suffix). The reading いもぎみ is an older form, and まいくん is a rare variant.