persnickety:
[per-snik-i-tee']
–adjective Informal.
1. overparticular; fussy.
2. snobbish or having the aloof attitude of a snob.
3. requiring painstaking care.
Origin:
"When the men appeared, the more persnickety ones washed in a tin basin." (Edward Everett Dale, Frontier Ways: Sketches of Life in the Old West)
* Definition from www.dictionary.com