We found 26 dictionaries that define the word niggling:

General (20 matching dictionaries)

1. niggling: Longman Dictionary of Contemporary English
2. niggling: Merriam-Webster
3. niggling: American Heritage Dictionary of the English Language
4. niggling: Collins English Dictionary
5. niggling: Vocabulary.com
6. Niggling, niggling: Wordnik
7. niggling: Cambridge Advanced Learner's Dictionary
8. niggling: Wiktionary
9. niggling: The Wordsmyth English Dictionary-Thesaurus
10. niggling: Infoplease Dictionary
11. Niggling, niggling: Dictionary.com
12. niggling: Cambridge Essential American English Dictionary
13. Niggling: Online Plain Text English Dictionary
14. Niggling: Rhymezone
15. Niggling: AllWords.com Multi-Lingual Dictionary
16. niggling: FreeDictionary.org
17. niggling: Mnemonic Dictionary
18. niggling: TheFreeDictionary.com

Business (1 matching dictionary)

19. niggling: Legal dictionary

Computing (1 matching dictionary)

20. niggling: Encyclopedia

Miscellaneous (2 matching dictionaries)

21. niggling: Idioms
22. niggling: Wordcraft Dictionary

Slang (2 matching dictionaries)

23. niggling, niggling: Green’s Dictionary of Slang
24. niggling: Urban Dictionary

(Note: See niggle as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Petty ▸ adjective:  Irritating. ▸ noun:  A small irritating sensation. Similar: footling, piffling, piddling, petty, fiddling, little, lilliputian, trivial, unimportant, picayune, more... Types: petty, trivial, insignificant, minor, unimportant, more... Adjectives: such, constant, little, petty, puerile, painful, much, needless, same, mere, present ▸ Words similar to niggling ▸ Usage examples for niggling ▸ Idioms related to niggling ▸ Wikipedia articles (New!) ▸ Popular adjectives describing niggling ▸ Popular nouns described by niggling ▸ Words that often appear near niggling ▸ Rhymes of niggling ▸ Invented words related to niggling