fluttering

noun
flut·​ter·​ing | \ ˈflə-tər-iŋ How to pronounce fluttering (audio) \
plural flutterings

Definition of fluttering

: a quick wavering or flapping movement or sensation felt a fluttering in his stomach That's about as small as the perturbation of air produced by the fluttering of a butterfly's wings …— Gary Taubes

First Known Use of fluttering

14th century, in the meaning defined above

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