| 单词 | niggling |
| 释义 | niggling(ˈnɪɡlɪŋ) adjective 1. petty 2. fussy 3. irritating 4. requiring painstaking work 5. persistently troubling a niggling back pain noun 6. an act or instance of niggling Derived forms nigglingly (ˈnigglingly) adverb |
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