Niggle

1. (v. t.) To trifle with; to deceive; to mock.
2. (v. t.) To trifle or play.
3. (v. t.) To act or walk mincingly.
4. (v. t.) To fret and snarl about trifles.
5. (v. t.) To use, spend, or do in a petty or trifling manner.
6. (v. t.) To elaborate excessively, as in art.
7. (v. i.) To move about restlessly or without result; to fidget.
8. (v. i.) To be finicky or excessively critical; to potter; esp., to work with excessive care for trifling details, as in painting.