vivacious       
adjective  approving uk/vɪˈveɪ.ʃəs/ us/vɪˈveɪ.ʃəs/
C2 (尤指女性)活泼迷人的
A vivacious person, especially a woman or girl, is attractively energetic and enthusiastic
  He brought along his wife, a vivacious blonde, some 20 years his junior. 他带着妻子,一位活泼迷人的金发美女,比他年轻大约20岁。 
 Synonym: vibrant