thoughtless

[ thawt-lis ]
/ ˈθɔt lɪs /
SEE SYNONYMS FOR thoughtless ON THESAURUS.COM

adjective

lacking in consideration for others; inconsiderate; tactless: a thoughtless remark.
characterized by or showing lack of thought: a shallow, thoughtless book.
not thinking enough; careless or heedless: thoughtless of his health.
devoid of or lacking capacity for thought.

Origin of thoughtless

First recorded in 1585–95; thought1 + -less

OTHER WORDS FROM thoughtless

thought·less·ly, adverb thought·less·ness, noun

Words nearby thoughtless

thought police, thought reading, thought transference, thought-out, thoughtful, thoughtless, thoughtway, thousand, thousand and one nights, thousand days, thousand guineas

Words related to thoughtlessness

inconsiderateness, negligence, carelessness, inattention, oversight, disregard, neglect

Example sentences from the Web for thoughtlessness

British Dictionary definitions for thoughtlessness

thoughtless
/ (ˈθɔːtlɪs) /

adjective

inconsiderate a thoughtless remark
having or showing lack of thought a thoughtless essay
unable to think; not having the power of thought

Derived forms of thoughtless

thoughtlessly, adverb thoughtlessness, noun