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English definition of “dull”

dull

adjective [-er/-est only] (NOT SHARP)   /dʌl/
(esp. of sound or pain) not sharp or clear: a dull knife I heard a dull thud from the kitchen. She felt a dull ache at the back of her head.
(Definition of dull adjective (NOT SHARP) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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