Difference between Frivolous and Flighty

FRIVOLOUS vs FLIGHTY: ADJECTIVE

Unworthy of serious attention; trivial.
Inappropriately silly.
Of little weight or importance; not worth notice; slight.
Given to trifling; marked with unbecoming levity; silly; interested especially in trifling matters.
Silly, especially at an inappropriate time or in an inappropriate manner.
Not serious in content or attitude or behavior

Absent-mindedly irresponsible
Given to capricious or unstable behavior.
Characterized by irresponsible or silly behavior.
Easily excited; skittish.
Indulging in flights, or wild and unrestrained sallies, of imagination, humor, caprice, etc.; given to disordered fancies and extravagant conduct; volatile; giddy; eccentric; slighty delirious.
Given to unplanned and silly ideas or actions.
Guided by whim and fancy
Unpredictably excitable (especially of horses)
Irresponsibly frivolous

Of little weight, worth, or importance; not worth notice; slight; trifling; trivial: as, a frivolous argument; a frivolous objection or pretext.
Given to trifling; characterized by unbecoming levity; silly; weak.
Specifically, in law, so clearly insufficient as to need no argument to show its weakness: as, a frivolous answer or plea.

Fleeting; swift; transient.
Indulging in flights or sallies of imagination, humor, caprice, etc.; given to disordered fancies and extravagant conduct; volatile; giddy; fickle; capricious; slightly delirious; wandering in mind.

Vexatious, Light minded, Light headed, Featherbrained, Empty headed, Flyaway, Light, Dizzy, Idle, Giddy, Flighty, Airheaded, Flippant, Trivial, Silly

Forgetful, Inconstant, Flirtatious, Feckless, Temperamental, Impulsive, Headstrong, Timid, Neurotic, Impetuous, Head in the clouds, Flyaway, Frivolous, Irresponsible, Scatterbrained

Vexatious, Light minded, Light headed, Featherbrained, Empty headed, Flyaway, Light, Dizzy, Idle, Giddy, Flighty, Airheaded, Flippant, Trivial, Silly

Forgetful, Inconstant, Flirtatious, Feckless, Temperamental, Impulsive, Headstrong, Timid, Neurotic, Impetuous, Head in the clouds, Flyaway, Frivolous, Irresponsible, Scatterbrained

The Prison Litigation Reform Act is working effectively to control frivolous prisoner litigation across the board, without barring meritorious claims equally with frivolous ones.
Up and down the line are borderline frivolous sometimes at best and outright frivolous at worst.
The example given is that of filing a frivolous pleading as instructed; there would be no liability unless the subordinate knew it was frivolous.
In determining whether an appeal is frivolous, this court may consider whether other state courts have determined similar claims to be frivolous.
She insulted the new attorney in email and frustrated me with frivolous filing after frivolous filing.
Frivolous spending is frivolous spending, no matter how you look at it.
Stop Frivolous Lawsuits Act, seems to have discovered a new fundraising tool: frivolous lawsuits.
Frivolous conduct includes the making of a frivolous motion for costs or sanctions under this section.
The female voice was deemed frivolous, frivolous bubble even, trivial chatter and dignified drivel.
Claims of Privileges Made for Frivolous Purposes Most claims made for frivolous purposes are at the same time substantively frivolous.

People have this impression of Mia as a flighty airhead flower child.
They are not very broody and tend to be a little flighty.
ANT: Unsteady, flighty, indiscreet, wanton, unsedate, erratic, eccentric, agitated, discomposed, ruffled.
Gemini energy is quick, gregarious, curious, flighty, inquisitive, sociable and adaptable.
Li Bai, rash Lo, thoughtful Shu Lien, and flighty Jen.
The CEO may be rash, unpredictable, and flighty.
The flute and clarinet answer with flighty arabesques.
Her flighty sister, Judah, saw what she did.
Besides, he seems a bit flighty and depressed.
They are flighty, free ranging, and good foragers.