Focus on the pronunciation of nickname
English definition of “nickname”
/ˈnɪkˌneɪm/ n [C]
› an informal name for someone or sometimes something, used esp. to show affection, and often based on the person's name or a characteristic of the person nickname
/ˈnɪk·neɪm/ v [T] › He was so optimistic that his staff nicknamed him Twinkletoes.