IPA: /ˈtʃɪəriə/
KK: /ˈtʃɪr.i.ər/
More cheerful or happy than someone or something else.
She felt cheerier after receiving good news from her friend.
Comparative: cheerier
Superlative: cheeriest
Cheerier → It is formed from "cheer" (from Old English *cēar*, meaning joy or gladness) and "-ier" (a comparative suffix indicating more). The word "cheerier" means more cheerful or having a greater sense of joy than something else.
Think of the Old English word for joy ('cēar') and remember that 'cheerier' means having more joy.