Foible (WOW)
a minor weakness in someone’s character
Pedant (noun.)
A person who emphasizes the minutiae of knowledge or learning.
Tenacity (noun.)
Persistence; the act of holding onto something (as a belief) or someone without letting go.
Pecuniary (adj.)
Of or pertaining to money or financial matters.
Ostentatious (adj.)
Conspicuous show of things in an attempt to impress others.
Aloof (adj.)
Removed or distant physically or emotionally.