Example : Thunderbolts quivered with elfin flares of heat lightning.
The fey quality was there, the ability to see the moon at midday.

Synonyms : fey

Example : She was an elfin creature--graceful and delicate.
Obsessed by things elfin and small.

Synonyms : elflike

Example : Elfin bells.
All the little creatures joined in the elfin dance.

Example : Perpetrated a practical joke with elfin delight.
Elvish tricks.

Synonyms : elfish, elvish