having or showing an ability to notice and understand things clearly : mentally
sharp or clever. Source: Merriam-Webster's Learner's Dictionary. Examples:
Having or showing shrewdness and discernment, especially with respect to one's own concerns. See Synonyms at shrewd.
the intellectual ability to penetrate deeply into ideas.
Having or showing an ability to accurately assess situations or people and turn
this to one's advantage: an
How to use
graded adjective & adjectiveIf you describe someone as