Mentally quick and resourceful.
Skilled at achieving what one wants, especially via unusual methods.
Nimble with hands or body; skillful; adept.
Showing inventiveness or originality; witty.
Possessing magical abilities.
Smart, intelligent, or witty; mentally quick or sharp.
Quick to understand, learn, and devise or apply ideas; intelligent.
Fit and healthy; free from fatigue or illness.
making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy
expressing the proportion of consumed energy that was successfully used in a process; the ratio of useful output to total input
causing effects, producing results; bringing into being; initiating change (rare except in philosophical and legal expression efficient cause = causative factor or agent)
effective, efficacious