
1) Fiddling 2) Footling 3) Fussing 4) Irritating 5) Petty 6) Picayune 7) Piddling 8) Piffling 9) Trivial 10) Troublesome 11) Unimportant 12) Worrying
Found on
https://www.crosswordclues.com/clue/niggling

1) Fiddling 2) Footling 3) Lilliputian 4) Little 5) Mickey mouse 6) Nagging 7) Petty 8) Picayune 9) Piddling 10) Piffling 11) Trivial 12) Uneasy 13) Unimportant
Found on
https://www.crosswordclues.com/clue/niggling

• (p. pr. & vb. n.) of Niggle • (p. pr. & vb. n.) of Niggle • (n.) Finicky or pottering work; • (n.) minute and very careful workmanship in drawing, painting, or the like, esp. when bestowed on unimportant detail.
Found on
http://thinkexist.com/dictionary/meaning/niggling/
Nig'gling noun Finicky or pottering work; specif.
(Fine Arts) , minute and very careful workmanship in drawing, painting, or the like, esp. when bestowed on unimportant detail.
Found on
http://www.encyclo.co.uk/webster/N/21

petty; trivial; inconsequential: to quibble about a niggling difference in terminology. · demanding too much care, attention, time, etc.: niggling chores about the house.
Found on
https://www.infoplease.com/dictionary/niggling
No exact match found.