sharp mind

• keenSharp or enthusiastic
• quickMoving with speed
• cleverShowing mental quickness
• brilliantIntensely bright or gifted
• astuteMentally sharp, discerning

shrewd · wit · razor · incisive · piercing · acute · cunning · alert · agile · nimble · bright · genius · savvy · perceptive · discerning · analytical · lucid · focus

• mentally sharpclear head, lucid, focused, alert, clearheaded
• geniusesgenius, brainiac, prodigy, Einstein, intellect
• intellectintelligence, intellect, brainpower, mind, cognition
• mental agilityquick wit, mental flexibility, quick-witted, sharp-witted, alertness
• mental claritymental clarity, lucidity, clear thinking, clear head, clear-headedness
• mental sharpnessmental agility, mental clarity, mental focus, acumen, alertness