chubbier is chubby's Comparative Degree

chubby

US [ˈtʃʌbi]
UK 
  • adj.〈非正式〉肥嘟嘟的;丰满的
  • Web更为丰满;较圆胖
Comparative Degree:chubbier  Superlative:chubbiest  
adj.
1.
〈非正式〉肥嘟嘟的;丰满的