貼
テン, チョウ, は.る, つ.く
stick, paste, apply
JLPT0 G7 S12 F2444
As per 占# (fixed in place) + 貝 commodities → commodities that secure/fix a loan in place → security; mortgage. Also, *put/stick on*, *paste* and *post* (← fix in place).
[Full Kanji Etymology List]