cheerfulness · noun U /ˈtʃɪə.fəl.nəs/
cheerfulness
C2 the state of being happy or bright and pleasant to look at
Dictionary example:
His cheerfulness made us all feel better.
Learner example:
Bright colours are identified with cheerfulness and happiness and dark colours with sadness or feeling down. (Certificate of Proficiency in English; C2; Spanish)
