Caviling

1. (p. pr. & vb. n.) of Cavil.

2. (a.) Disposed to cavil; finding fault without good reason. See Captious.

Thesaurus Entries

captious, carping, censorious, contrary, critic, demanding, exacting, faultfinding, finicky, fussy, hairsplitting, hypercritical, mean, niggling, nitpicking, overcritical, perverse, petty, picky, small