Older

Older brother

兄

哥

哥哥

Older brother's wife

嫂

Older brothers

哥哥們

哥哥, 們

Older looking

看起來較年長

看起來, 起來, 較年長, 年長

Older or more senior than self

長輩

Older sister

姊

姐

大姐

姊姊

姐姐