The Oxford Thesaurus An A-Z Dictionary of Synonyms - elfin adj.

1) elvish, elfish, elf-like, impish, puckish, frolicsome, sprightly, arch, playful, mischievous, tricky: I suppose she has a certain elfin charm, but I don't like her. 2) small, wee, diminutive, tiny, little, dainty, Lilliputian: This is a delightful tale of elfin folk and magic birds.