palpitate
verb /ˈpælpɪteɪt/
  /ˈpælpɪteɪt/
 [intransitive]Verb Forms
| present simple I / you / we / they palpitate |  /ˈpælpɪteɪt/  /ˈpælpɪteɪt/ | 
| he / she / it palpitates |  /ˈpælpɪteɪts/  /ˈpælpɪteɪts/ | 
| past simple palpitated |  /ˈpælpɪteɪtɪd/  /ˈpælpɪteɪtɪd/ | 
| past participle palpitated |  /ˈpælpɪteɪtɪd/  /ˈpælpɪteɪtɪd/ | 
| -ing form palpitating |  /ˈpælpɪteɪtɪŋ/  /ˈpælpɪteɪtɪŋ/ | 
- (of the heart) to beat rapidly and/or in an irregular way especially because of fear or excitement- He was aware of his palpitating heart.
- Her heart was palpitating wildly.
 Oxford Collocations DictionaryPalpitate is used with these nouns as the subject:- heart
 Word Originearly 17th cent.: from Latin palpitat- ‘patted’, from the verb palpitare, frequentative of palpare ‘touch gently’.