lightheartedness's Usage Examples:

Although marred by occasional schmaltz, it generally manages to strike a good balance between pathos and lightheartedness.

Writing an online dating profile can be difficult, but remember to take the whole thing with a dash of lightheartedness.

The open-air enjoyments of the wood, the field, the dance upon the village green, are sung with juvenile lightheartedness.

Recent criticism has been far more impartial, and almost too much respect has been paid to his attainments, especially in the matter of metre, though Lydgate himself, with offensive lightheartedness, admits his poor craftsmanship.

Synonyms:

cheerfulness, carefreeness, lightsomeness, blitheness, insouciance,

Antonyms:

responsibleness, responsibility, awkwardness, sadness, cheerlessness,