frivolous

As adjectives the difference between austere and frivolous

is that austere is austere while frivolous is silly, especially at an inappropriate time or in an inappropriate manner.

As an adjective frivolous

is silly, especially at an inappropriate time or in an inappropriate manner.

As an adverb sparingly is

in a sparing manner; with frugality, moderation, scantiness, reserve, forbearance, or the like; sparsely.

As adjectives the difference between casual and frivolous

is that casual is happening by chance while frivolous is silly, especially at an inappropriate time or in an inappropriate manner.

As a noun casual

is (british|nz) a worker who is only working for a company occasionally, not as its permanent employee.

As adjectives the difference between headlong and frivolous

is that headlong is precipitous while frivolous is silly, especially at an inappropriate time or in an inappropriate manner.

As an adverb headlong

is with the head first or down.

As a verb headlong

is to precipitate.

As a noun quip

is a smart, sarcastic turn or jest; a taunt; a severe retort or comeback; a gibe.

As a verb quip

is to make a quip.

As an adjective frivolous is

silly, especially at an inappropriate time or in an inappropriate manner.

As adjectives the difference between whimsical and frivolous

is that whimsical is given to whimsy; capricious; odd; peculiar; playful; light-hearted or amusing while frivolous is silly, especially at an inappropriate time or in an inappropriate manner.

As an adjective frivolous

is silly, especially at an inappropriate time or in an inappropriate manner.

As a noun youth is

(lb) the quality or state of being young.

As adjectives the difference between frivolous and perfunctory

is that frivolous is silly, especially at an inappropriate time or in an inappropriate manner while perfunctory is done merely to discharge a duty; performed mechanically and as a thing of rote; done in a careless and superficial manner; characterized by indifference; as, perfunctory admonitions; aspiring only to minimum standards.

As adjectives the difference between frivolous and bored

is that frivolous is silly, especially at an inappropriate time or in an inappropriate manner while bored is suffering from boredom.

As a verb bored is

(bore).

As adjectives the difference between extraneous and frivolous

is that extraneous is not belonging to, or dependent upon, a thing; without or beyond a thing; foreign while frivolous is silly, especially at an inappropriate time or in an inappropriate manner.