riant
/riːˈɒ̃/ /ˈrʌɪənt/adjective
1Of a person or a person's disposition, actions, etc.: smiling, mirthful, cheerful, light-hearted.
2Of a thing, especially a landscape, place, etc.: having a pleasant aspect, agreeable to the sight, looking bright or cheerful.
Origin
Mid 16th century; earliest use found in Thomas Paynell (d.?1564), translator. From French riant smiling, laughing, cheerful, pleasant to look at, use as adjective of present participle of rire to laugh from classical Latin rīdēre to laugh.