Difference between Irresponsible and Flighty

IRRESPONSIBLE vs FLIGHTY: NOUN

Marked by a lack of responsibility.
Lacking a sense of responsibility; unreliable or untrustworthy.
Not liable to be called to account by a higher authority.
Not responsible; not liable or able to answer for consequences; innocent.
Not to be trusted; unreliable; lacking a proper sense of responsibility.
Lacking a sense of responsibility; incapable of or not chargeable with responsibility; unable to respond to obligation.
Showing lack of care for consequences

Irresponsibly frivolous
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)
Absent-mindedly irresponsible

Not responsible; not subject to responsibility; not to be held accountable, or called into question: as, an irresponsible government; the irresponsible control of wealth.
Not capable of or chargeable with responsibility; unable to respond to obligation, as an insolvent debtor; not subject to or incurring legal responsibility, as an infant or idiot for his acts; not of a responsible nature or character.

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.

Head in the clouds, Harum scarum, Happy go lucky, Do nothing, Devil may care, Loose, Idle, Freewheeling, Slaphappy, Carefree, Scatterbrained, Flighty, Unreliable, Unaccountable, Feckless

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

Trigger happy, Head in the clouds, Harum scarum, Happy go lucky, Devil may care, Loose, Idle, Freewheeling, Slaphappy, Carefree, Scatterbrained, Flighty, Unreliable, Unaccountable, Feckless

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

Leaking the information is considered an irresponsible act.
Would you call yourself financially responsible or irresponsible?
ONE test, I think, is negligent and irresponsible.
India, which he regarded as hasty and irresponsible.
"He said when he was young and irresponsible, he was 'young and irresponsible' and he left it at that.".
It was irresponsible of us to borrow, but it was also irresponsible of them to lend.
He warned political party leaders and their members to refrain from making irresponsible, inflammatory statements or pronouncements which may incite irresponsible or violent behaviour.
Irresponsible breeding is the number one factor in where pit bulls show up on this list, and irresponsible owners are number two.
It is the irresponsible owner and or the irresponsible breeder.
As we all know, lax lending practices earlier this decade led to irresponsible lending and irresponsible borrowing.

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.