Archaic honorific term for an older brother. Cross-referenced with 兄者, suggesting a related older form. Not used in modern Japanese; replaced by お兄さん or 兄上 in historical contexts.
See also: 兄じゃ
In old documents, the honorific title 'anijahito' is recorded.
Ateji spelling; the kanji are used phonetically. This form is archaic and rare.
Mixed kanji-kana spelling; also archaic and rare.
The exact derivation is uncertain. It appears to be an archaic honorific compound, possibly combining 兄 (older brother) with 者 (person) and 人 (person), but the ateji usage suggests the kanji were chosen for sound rather than meaning.