I believe the answer is obtuse
The word quickness in portuguese is velocidade or rapidez.
Acuteness Awareness Cleverness Ingenuity Intellect Intuition Perception Sharpness Smartness
The girls quickness helped her to win the race.
The opposite is imperceptive (lacking in perception or insight). Other antonyms could be obtuse or oblivious.
The noun 'quickness' is an abstract noun as a word for the quality or state of being mentally agile; a word for doing something in a short time; a word for a concept.The noun 'quickness' is a concrete noun as a word for rapidity of movement; a word for a physical quality.
Unconscious Meaning, Not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead "lay unconscious on the floor"
The word could be quietness, quickness, or quirkiness.
intelligence IQ, acuity, acumen, agility, alertness, aptitude,brainpower, brains, brightness, brilliance, capacity, cleverness, comprehension,coruscation, discernment, gray matter, intellect,judgment, luminosity, mentality, mind, penetration, perception, perspicacity, precocity, quickness, quotient, reason, sagacity, savvy,sense, skill, smarts, subtlety, the right stuff,trenchancy, understanding, what it takes, wit
A verb for intellect is impart. As in "to impart your knowledge". Assert or sharpen can also be used as verbs for intellect.
super powers of fastness! :)
Perception
speed, quickness, alacrity, rate, pace, tempo