different between irresponsible vs thoughtless

English

Etymology

From ir- +? responsible.

Pronunciation

• (UK) IPA^(key): /??r??sp?ns?bl/
• (US) IPA^(key): /?r??sp?ns?b?l/

Adjective

irresponsible (comparative more irresponsible, superlative most irresponsible)

1. (now rare) Not responsible; exempt from legal responsibility, not to be held accountable.
   • 1790, Edmund Burke, Reflections on the Revolution in France, Oxford 2009, p. 28:

     They left the crown what, in the eye and estimation of law, it had ever been, perfectly irresponsible.

2. Lacking a sense of responsibility; performed or acting as though without responsibility; negligent.

Translations

Noun

irresponsible (plural irresponsibles)

1. Someone who is not responsible.

References

• irresponsible in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• irresponsible in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

See also

• unresponsive

English

Etymology

thought +? -less

Pronunciation

• (UK) IPA^(key): /????tl?s/, /????tl?s/
• (General American) enPR: thôt’l?s, thôt’l?s, IPA^(key): /???tl?s/, /???tl?s/
• (cot–caught merger) enPR: thät’l?s, thät’l?s, IPA^(key): /???tl?s/, /???tl?s/

Adjective

thoughtless (comparative more thoughtless, superlative most thoughtless)

1. Marked by or showing lack of due thought or care; careless.
2. Inconsiderate, inattentive.

   A thoughtless remark.

3. Lacking thought or consideration.

   The debate turned into thoughtless bickering.

Coordinate terms

• short-sighted

Derived terms

• thoughtlessly
• thoughtlessness

Translations