姉貴
あ
ね
き
Meanings
1
elder sister; big sister
familiar languagehonorific or respectful (sonkeigo)
Familiar and honorific term for one's own elder sister, used mainly by younger siblings. Not used for addressing someone else's sister directly.
My big sister got into university.
Hey sis, can you help me out a bit?
2
older female friend; big sis (figurative)
Used for a slightly older female friend or acquaintance, often in casual or slangy speech. Can carry a rough or gang-like tone when written as 姐貴.
She's like an older sister figure to me.
Hey big sis, looking forward to today!