thoughtlessly

thoughtless

[thawt-lis]
adjective
1.
lacking in consideration for others; inconsiderate; tactless: a thoughtless remark.
2.
characterized by or showing lack of thought: a shallow, thoughtless book.
3.
not thinking enough; careless or heedless: thoughtless of his health.
4.
devoid of or lacking capacity for thought.

Origin:
1585–95; thought1 + -less

thoughtlessly, adverb
thoughtlessness, noun


1. negligent, neglectful. 3. inattentive, remiss.
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World English Dictionary
thoughtless (ˈθɔːtlɪs)
 
adj
1.  inconsiderate: a thoughtless remark
2.  having or showing lack of thought: a thoughtless essay
3.  unable to think; not having the power of thought
 
'thoughtlessly
 
adv
 
'thoughtlessness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

thoughtless
"inconsiderate," 1794, from thought + -less.
Online Etymology Dictionary, © 2010 Douglas Harper
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