Simple Definition of thoughtless

from our Learner's Dictionary

thoughtless

adjective

ˈθɑːtləs

: not showing concern for the needs or feelings of other people : inconsiderate

thoughtless behavior

thoughtless comments

a selfish and thoughtless person

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“Thoughtless.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/thoughtless. Accessed 22 Jun. 2026.

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