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thoughtless

thought·less

thoughtless

 
pronunciation:
thawt lihs
features:
Word Explorer, Word Parts
part of speech: adjective
definition 1: not thinking enough; showing little care.
The thoughtless driver sped through the red light.
synonyms:
careless, rash, reckless
antonyms:
careful, thoughtful
similar words:
foolish, impetuous
definition 2: showing a lack of thought or attention.
There were many thoughtless mistakes on her spelling test.
antonyms:
thoughtful
similar words:
careless, dumb, shallow, stupid, vacant
definition 3: not giving attention to the needs of others; inconsiderate.
It was thoughtless of you to eat all the sandwiches.
synonyms:
inconsiderate, insensitive
antonyms:
considerate, thoughtful
similar words:
discourteous, impolite, rude
derivations: thoughtlessly (adv.), thoughtlessness (n.)
Word Explorer
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  care, thought
Word Parts
The word thoughtless contains the following part:
-less Middle English adjective-forming suffix that means without
Show wordsHide wordsMore about this word part:
The suffix -less attaches primarily to monosyllabic English nouns. However, -less is a fully productive suffix, meaning it can be added to any noun to form legitimate new words.
synonyms:
a-1, an-1
antonyms:
-ful1