Meaning of the word thoughtless in English

What does thoughtless mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

thoughtless

US /ˈθɑːt.ləs/
UK /ˈθɑːt.ləs/

Adjective

1.

not considering how your actions or words may upset someone:

Example:
It was thoughtless not to call and say you'd be late.
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