Dictionary.com

obtuse

[ uhb-toos, -tyoos ]
/ əbˈtus, -ˈtyus /
Save This Word!
See synonyms for: obtuse / obtusely / obtuseness on Thesaurus.com

adjective
not quick or alert in perception, feeling, or intellect; not sensitive or observant; dull.
not sharp, acute, or pointed; blunt in form.
(of a leaf, petal, etc.) rounded at the extremity.
indistinctly felt or perceived, as pain or sound.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of obtuse

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

OTHER WORDS FROM obtuse

WORDS THAT MAY BE CONFUSED WITH obtuse

abstruse, obtuse
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use obtuse in a sentence

British Dictionary definitions for obtuse

obtuse
/ (əbˈtjuːs) /

adjective
mentally slow or emotionally insensitive
maths
  1. (of an angle) lying between 90° and 180°
  2. (of a triangle) having one interior angle greater than 90°
not sharp or pointed
indistinctly felt, heard, etc; dullobtuse pain
(of a leaf or similar flat part) having a rounded or blunt tip

Derived forms of obtuse

obtusely, adverbobtuseness, noun

Word Origin for obtuse

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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for obtuse

obtuse
[ ŏb-tōōs, əb- ]

adj.
Lacking quickness of perception or intellect.
Not sharp or acute; blunt.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK