Definition: able to move skillfully toward an objective or away from an obstacle; able to devise a successful stratagem or scheme; shrewd

Quote: The dragonfly is an exceptionally beautiful insect and a fierce carnivore. It has four wings that beat independently. This gives it an ability to maneuver in the air with superb dexterity. A dragonfly can put on a burst of speed, stop on a dime, hover, fly backward, and switch direction in a flash. — Richard Preston (1954-) American non-fiction writer
     Note: Dragonflies beat their wings 1,800 times per minute. Hummingbirds are able to beat their wings (depending on their size) from 720 to 4,800 times per minute. Thus they can hover, fly backwards, sideways, belly up, and straight up. Bees beat their wings from 12,480 to 16,830 time per minute!