Definition of “obtuse” - English Dictionary

“obtuse” in British English

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obtuseadjective

uk /əbˈtʃuːs/ us /ɑːbˈtuːs/

obtuse adjective (ANGLE)

specialized mathematics (of an angle) more than 90° and less than 180°

obtusely
adverb uk /əbˈtʃuːs.li/ us /ɑːbˈtuːs.li/ formal
obtuseness
noun [ U ] uk /əbˈtʃuːs.nəs/ us /ɑːbˈtuːs.nəs/ formal

(Definition of “obtuse” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“obtuse” in American English

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obtuseadjective

us /əbˈtus, ɑb-/

obtuse adjective (ANGLE)

geometry (of an angle) more than 90° and less than 180°, or (of a triangle) containing an angle of more than 90° and less than 180°

obtuse adjective (STUPID)

stupid or slow to understand:

I’m not trying to be obtuse, but I don’t get it.

(Definition of “obtuse” from the Cambridge Academic Content Dictionary © Cambridge University Press)