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sharp

adjective (SUDDEN)
 
 
/ʃɑːp/ US  /ʃɑːrp/

Definition

B2 happening suddenly, quickly, and strongly: a sharp drop in temperature a sharp decline in the standard of living a sharp rise/increase in the number of cases of this illness a sharp bend in the road to suffer a sharp blow to the headNot expected or planned sharpness
 
 
/ˈʃɑːp.nəs/ US  /ˈʃɑːrp-/ noun [U]
She has a remarkable sharpness of mind. the sharpness of a photograph/imagePhotographyIntelligencePerceptivePerceptiveUsing the eyesIntelligenceThe style, appearance, and make-up of clothesModern and fashionableFashionModern and fashionableSharp and bluntNot expected or planned
(Definition of sharp adjective (SUDDEN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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