A disputant who quibbles, someone who raises annoying petty objections
English: quibbler, caviller, caviler, pettifogger
pettifoggerEnglish
pettifogger, caviler, caviller, quibbler, shyster
Noun
A person (especially a lawyer or politician) who uses unscrupulous or unethical methods
English: shyster, pettifogger