palpitating

(verb) cause to throb or beat rapidly. Synonyms: palpitate. Example: "Her violent feelings palpitated the young woman's heart."

(verb) shake with fast, tremulous movements. Synonyms: quiver, quake, palpitate. Example: "His nostrils palpitated."

(verb) beat rapidly. Synonyms: palpitate, flutter. Example: "His heart palpitated."

(adj) having a slight and rapid trembling motion. Synonyms: palpitant. Examples: "Palpitant movements rather than violent eruptions." "My palpitating heart."