Here are some synonyms for the words "irresponsible" and "careless":

Irresponsible:

1. Carefree: Not concerned or worried about responsibilities.
2. Feckless: Lacking initiative or strength of character; ineffective.
3. Flighty: Easily distracted and prone to changing thoughts or decisions.
4. Harebrained: Foolish or rash in nature.
5. Ill-considered: Not thought out or given due consideration.
6. Lax: Not strict or severe; loose.
7. Reckless: Showing a lack of concern for the consequences of one's actions.
8. Immature: Not fully developed or lacking emotional maturity.
9. Thoughtless: Not showing consideration for the needs or feelings of others.
10. Indifferent: Having no particular interest or concern; apathetic.

For more detailed synonyms and definitions, you can check out resources like Thesaurus.com, Merriam-Webster, and Cambridge English.

Careless:

1. Negligent: Failing to take proper care in doing something.
2. Reckless: Not caring about potential harm or danger.
3. Inattentive: Not paying attention; absentminded.
4. Thoughtless: Lacking consideration for others' feelings or concerns.
5. Incautious: Not careful; risky.
6. Unmindful: Not aware or attentive to something.
7. Lax: As mentioned earlier, it can also refer to a lack of strictness in approach or action.

You can explore further synonyms and their meanings on platforms like Thesaurus.com and Merriam-Webster.

In summary, both "irresponsible" and "careless" convey a sense of negligence or a lack of responsibility, and they have numerous synonyms that capture various facets of these concepts.

Sources

450 Synonyms & Antonyms for IRRESPONSIBLE | Thesaurus.comIRRESPONSIBLE Synonyms: 48 Similar and Opposite WordsIRRESPONSIBLE - 32 Synonyms and Antonyms - Cambridge EnglishIRRESPONSIBILITY Synonyms: 47 Similar and Opposite WordsSynonyms of IRRESPONSIBLE | Collins American English ThesaurusWhat is another word for irresponsible? - WordHippo164 Synonyms & Antonyms for IRRESPONSIBILITY | Thesaurus.com

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