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Từ điển WordNet v3.1 - WordNet Dictionary
obtuse



adjective
1. of an angle;
between 90 and 180 degrees
Ant:
acute
2. (of a leaf shape) rounded at the apex
Similar to:
simple, unsubdivided
Derivationally related forms:
obtuseness
3. lacking in insight or discernment
- too obtuse to grasp the implications of his behavior
- "a purblind oligarchy that flatly refused to see that history was condemning it to the dustbin"- Jasper Griffin
Syn:
purblind
Similar to:
undiscerning
Derivationally related forms:
obtuseness
4. slow to learn or understand;
lacking intellectual acuity
- so dense he never understands anything I say to him
- never met anyone quite so dim
- "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray
- dumb officials make some really dumb decisions
- he was either normally stupid or being deliberately obtuse
- worked with the slow students
Syn:
dense, dim, dull, dumb, slow
Similar to:
stupid
Derivationally related forms:
slowness (for: slow), obtuseness, dumbness (for: dumb), dullness (for: dull), denseness (for: dense)

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