This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A state of joyful exuberance or merriment; vivacity.

n. Merry or joyful activity; festivity: making preparations for the holiday gaieties.

n. Bright color or showiness, as of dress; finery.

n. The state of being happy.

n. Same as gayety.

n. The state of being gay; cheerful animation; mirthfulness.

n. Action or acts prompted by or inspiring merry delight; a pleasure: commonly in the plural: as, the gaieties of the season.

n. Finery; showiness: as, gaiety of dress.

n. Synonyms Life, Liveliness, etc. (see animation); cheerfulness. joyousness, blitheness. glee, jollity.

n. a gay feeling

n. a festive merry feeling

"On leave, many of your men gravitate towards the Piccadilly neighbourhood, where, despite the black-out, rationing and high prices, a certain spirituous gaiety is still achieved, but this is more likely to lower the bank account than to raise the view of the earnestness of our war-effort."

levity   

gayness   

gayety   

gayety    cheerfulness    merriment    humour    tenderness    sweetness    simplicity    frankness    friendliness    enjoyment