"elfin" in the adjective sense
1. elfin, fey
suggestive of an elf in strangeness and otherworldliness
"thunderbolts quivered with elfin flares of heat lightning"
"the fey quality was there, the ability to see the moon at midday"- John Mason Brown
2. elfin, elflike
small and delicate
"she was an elfin creature
relating to or made or done by or as if by an elf
"all the little creatures joined in the elfin dance"
4. elfin, elfish, elvish
usually good-naturedly mischievous
"perpetrated a practical joke with elfin delight"
Source: WordNet® (An amazing lexical database of English)
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