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adjective
deeply perceptive
Synonyms: astute, canny, clever, discerning, discriminating, incisive, ingenious, insightful, intense, intuitive, judicious, keen, observant, penetrating, perspicacious, piercing, quick-witted, sensitive, sharp, smart, subtle
Antonyms: dense, imperceptive, insensitive, obtuse, slow, stupid
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adjective
very important
Synonyms: afflictive, critical, crucial, dangerous, decisive, desperate, dire, essential, grave, serious, severe, sudden, urgent, vital
Antonyms: not serious, unimportant
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adjective
severe, intense
Synonyms: cutting, distressing, excruciating, exquisite, fierce, keen, overpowering, overwhelming, piercing, poignant, powerful, racking, severe, sharp, shooting, stabbing, sudden, violent
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adjective
having a sharp end or point
Synonyms: acicular, aciculate, acuminate, acuminous, cuspate, cuspidate, knifelike, needle-shaped, peaked, piked, pointed, sharpened, spiked
Antonyms: blunt, dull