Synonyms for Sunny (same or very similar meaning)
WordNet sense 1 (abounding with sunlight):
bright, shining, shiny, sunshiny
WordNet sense 2 (bright and pleasant; promoting a feeling of cheer):
cheery
WordNet sense 3 (being full of or promoting cheer; having or showing good spirits):
cheerful
From the ODE community, based on WordNet
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