因
イン, よ.る, ちな.む, て
cause, factor, be associated with, depend on, be limited to
JLPT3 G5 S6 F636
The relevant oracle bone form of this character shows bedding upon which a person lies/adheres (that is, over which the person is superimposed) → *depend*; *cause*; *be connected with* (← superimposition) → *be based on*; *be due to*; *therefore*; *consequently*.
[Full Kanji Etymology List]