ˈchirfəl, -iəf- adjective
( sometimes cheerfuller -f(ə)lə(r) ; sometimes cheerfullest -f(ə)lə̇st)
Etymology: Middle English cherefull, from chere + -full -ful
1. : marked by cheer or by spontaneous good spirits arising from a carefree sanguine attitude and a hearty bright lively disposition
the incessant warble of the red-eyed vireo, cheerful … as the merry whistle of a schoolboy — John Burroughs
2. : conducive to cheer : likely to brighten, encourage, and dispel gloom or worry
her flat was always … cheerful , gay with flowers, and the chintzes in the drawing room were bright and pretty — W.S.Maugham
Synonyms: see glad