gar·bol·o·gy 
(gär-bŏlə-jē)
(gär-bŏlə-jē)n.
The study of a society or culture by examining or analyzing its refuse.
[GARB(AGE) + -LOGY.]
gar·bolo·gist n.
- opponency
- opponent
- opportune
- opportunely
- opportuneness
- opportunism
- opportunist
- opportunistic
- opportunistic infection
- opportunity
- opposability
- opposable
- oppose
- opposer
- opposite
- opposite field
- opposite-field
- oppositely
- oppositeness
- opposite number
- opposition
- oppositional
- oppositionist
- oppress
- oppression