a trivial criticism, discomfort, or annoyance:it is an excellent book except for my few niggleshe can only throw underarm at the moment because of a niggle
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Universal
cause slight but persistent annoyance, discomfort, or anxiety:Doreen wanted to discuss matters that niggled at her mind (as adjective niggling)niggling aches and pains
[with object] criticize or annoy (someone) in a petty way:people niggling me for doing too much work