Synonyms of 'palpitate'
1 beatDictionary, pound, flutterHer heart was palpitating wildly.
2 trembleDictionary, pulse, shiverHis whole body was palpitating with fear.
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If something thin or light flutters, or if you flutter it, it moves up and down or from side to side with a lot of quick, light movements.
a butterfly fluttering its wings
If your heart is pounding, it is beating with an unusually strong and fast rhythm, usually because you are afraid.
I'm sweating and my heart is pounding.
Thesaurus for palpitate from the Collins English Thesaurus
If someone's heart palpitates , it beats very fast in an irregular way , because they are frightened or anxious .