sly and crafty; wily and experienced
Describes someone who is both cunning and seasoned, often with a negative connotation. Rare literary word; not used in everyday conversation.
He outwitted his opponent with a sly and crafty scheme.
That politician is wily and experienced, and doesn't easily show his true intentions.
狡猾 means 'cunning' or 'sly' and is more common than 狡猾老獪. 狡猾老獪 adds the nuance of being seasoned or experienced (老獪).
老獪 means 'crafty from experience' or 'wily with age'. 狡猾老獪 combines this with 狡猾 to emphasize both cunning and experience.
Compound of 狡猾 (cunning, sly) and 老獪 (crafty from experience). The exact historical derivation is uncertain; the spelling is conventionally associated with these meanings.