乃
ナイ, ダイ, ノ, アイ, の, すなわ.ち, なんじ, おさむ, お, のり

from, possessive particle, whereupon, accordingly

JLPT1 G13 S0 F1978

A depiction of a supple ear clinging to the side of the head (compare 耳) or a fetus clinging in the womb (compare 身). *You*, *after all*, *that is (to say)* and *of* are all borrowed meanings.

[Full Kanji Etymology List]