ELFISH
elfin, elfish, elvish
(adjective) usually good-naturedly mischievous; “perpetrated a practical joke with elfin delight”; “elvish tricks”
Source: WordNet® 3.1
Etymology
Adjective
elfish (comparative more elfish, superlative most elfish)
Characteristic of an elf; elfin, elven.
Mischievous.
Synonyms
• see list in elven
Anagrams
• Fishel
Source: Wiktionary
Elf"ish, a.
Definition: Of or relating to the elves; elflike; implike; weird; scarcely
human; mischievous, as though caused by elves. "Elfish light."
Coleridge.
The elfish intelligence that was so familiar an expression on her
small physiognomy. Hawthorne.
Source: Webster’s Unabridged Dictionary 1913 Edition