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obtuse

Flag: gbEnglishOxford Dictionary of English
obtuse /əbˈtjuːs , ɒbˈtjuːs /
▸ adjective
1 annoyingly slow to understand; dull-witted:
he wondered if the doctor was being deliberately obtuse
blame lies at the feet of obtuse senior leaders.
▪ difficult to understand; unclear:
some of the lyrics are a bit obtuse.
2 (of an angle) more than 90° and less than 180°:
an obtuse angle of 150°.
3 not sharp-pointed or sharp-edged; blunt:
it had strange obtuse teeth.
– DERIVATIVES
obtusely /əbˈtjuːsli , ɒbˈtjuːsli / adverb
obtuseness /əbˈtjuːsnəs , ɒbˈtjuːsnəs / noun
obtusity noun
– ORIGIN late Middle English (in obtuse (sense 3 of the adjective)): from Latin obtusus, past participle of obtundere ‘beat against’ (see obtund).