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The definition of obtuse

5 Definitions of: obtuse

    1. adjective, mentally slow or emotionally insensitive
    2. adjective, maths a) (of an angle) lying between 90° and 180° b) (of a triangle) having one interior angle greater than 90°
    3. adjective, not sharp or pointed
    4. adjective, indistinctly felt, heard, etc; dull
    5. adjective, (of a leaf or similar flat part) having a rounded or blunt tip
    6. Show me some examples of this word: obtuse
    7. Show me the etymology of the word: obtuse
Synonyms: stupid, simple, slow, thick, dull, dim, dense, dumb (informal), sluggish, retarded And more...
Antonyms: clever
 

From Collins

©HarperCollins 2008. Collins English Dictionary definition of obtuse