undine

/ˈʌndiːn/
noun
  1. A female water spirit in folklore, often said to be able to gain a soul by marrying a human.
    • My grandmother used to warn us not to swim too far out, or an undine might pull us under.
    • In the painting, an undine rises from the river, her hair tangled with water lilies.
    • The old story tells of an undine who fell in love with a mortal knight.
Synonyms
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