Whats another word for someone perceptive? [duplicate]

Whats another word to describe someone who can pick up on things quickly?

Solution 1:

astute : keenly perceptive or discerning; sagacious. ¹

or

perspicacious :

• Having or showing penetrating mental discernment; clear-sighted.²
• acutely perceptive or discerning³

^{1_{Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.}}

^{2_{American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.}}

^{3_{Collins English Dictionary – Complete and Unabridged © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003}}