The basic dictionary of Canarianisms of the Canarian Academy of Language includes the adjective *ardiloso*, which is defined as "Mañoso" (skillful/clever) and is found on the islands of Gran Canaria, Tenerife, and La Palma. *Jardiloso* is a popular phonetic variant.
Ardiloso, which comes from ardil, has the meaning of 'astute, sharp, skillful' in Andalusia and some Latin American countries, a value very similar to what you indicate in your query when you point out that it is also applied to a quick-witted person. The adjective ardil, which the Dictionary of the Royal Spanish Academy marks as obsolete, is defined as "Handy, astute, sagacious." It is likely that in the Canary Islands, in addition to the use referring to manual skill, those related to cunning and sagacity, intellectual skills, are also present.
Our Words
gadaño
1. m. LP. Finger of the hand. Used mostly in plural. Take the fingers off the windows.
2. m. LP. Mark or fingerprint left by the fingers of the hand on glass and other shiny surfaces. Usually used in plural. I just cleaned the table and the marks are already there.
retrace
1. To grip very tightly. He gripped the plow handle with his hand, and didn't stop until he had plowed the whole field.
2. v. To clench one's teeth very tightly, generally due to pain, rage, or anger. He clenched his teeth to avoid answering him as he deserved.
Information on the location of voices and meanings
Fv: Fuerteventura
GC: Gran Canaria
Go: La Gomera
Hi: El Hierro
LP: La Palma
Lz: Lanzarote
Occ: Western Islands (Tenerife, La Gomera, La Palma and El Hierro)
Or: Eastern Islands (Lanzarote, Fuerteventura, and Gran Canaria)
Tf: Tenerife