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obtuse

[uh b-toos, -tyoos] /əbˈtus, -ˈtyus/
adjective
1.
not quick or alert in perception, feeling, or intellect; not sensitive or observant; dull.
2.
not sharp, acute, or pointed; blunt in form.
3.
(of a leaf, petal, etc.) rounded at the extremity.
4.
indistinctly felt or perceived, as pain or sound.
Origin
1500-1510
1500-10; < Latin obtūsus dulled (past participle of obtundere), equivalent to ob- ob- + tūd-, variant stem of tundere to beat + -tus past participle suffix, with dt > s
Related forms
obtusely, adverb
obtuseness, noun
subobtuse, adjective
subobtusely, adverb
subobtuseness, noun
Can be confused
abstruse, obtuse.
Synonyms
1. unfeeling, tactless, insensitive; blind, imperceptive, unobservant; gauche, boorish; slow, dim.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for obtusely

obtuse

/əbˈtjuːs/
adjective
1.
mentally slow or emotionally insensitive
2.
(maths)
  1. (of an angle) lying between 90° and 180°
  2. (of a triangle) having one interior angle greater than 90°
3.
not sharp or pointed
4.
indistinctly felt, heard, etc; dull: obtuse pain
5.
(of a leaf or similar flat part) having a rounded or blunt tip
Derived Forms
obtusely, adverb
obtuseness, noun
Word Origin
C16: from Latin obtūsus dulled, past participle of obtundere to beat down; see obtund
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for obtusely

obtuse

adj.

early 15c., "dull, blunted," from Middle French obtus (fem. obtuse), from Latin obtusus "blunted, dull," also used figuratively, past participle of obtundere "to beat against, make dull," from ob "against" (see ob-) + tundere "to beat," from PIE *(s)tud-e- "to beat, strike, push, thrust," from root *(s)teu- "to push, stick, knock, beat" (cf. Latin tudes "hammer," Sanskrit tudati "he thrusts"). Sense of "stupid" is first found c.1500. Related: Obtusely; obtuseness.

Online Etymology Dictionary, © 2010 Douglas Harper
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obtusely in Medicine

obtuse ob·tuse (ŏb-tōōs', -tyōōs', əb-)
adj.

  1. Lacking quickness of perception or intellect.

  2. Not sharp or acute; blunt.


ob·tuse'ness n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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