levity

Definition of Levity in English :

1. levity

feeling an inappropriate lack of seriousness

2. levity

a manner lacking seriousness

WordNet Lexical Database for English. Princeton University. 2010.

Levity

noun plural -ties

1.

inappropriate lack of seriousness

2.

fickleness or instability

3. archaic

lightness in weight

nounWord forms: plural ˈlevities

1. Rare

lightness of weight; buoyancy

2.

lightness or gaiety of disposition, conduct, or speech; esp., improper or unbecoming gaiety or flippancy; lack of seriousness; frivolity

3.

fickleness; instability

n. pl. lev·i·ties

1. Humor, merriment, or a lack of seriousness, especially when inappropriate: a subject that should not be treated with levity.

2. Archaic Inconstancy; changeableness.

3. Archaic The state or quality of being light; buoyancy.