As a noun merperson is
a mythological creature with a human upper half (head, arms, and torso) and a piscine lower half.
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Not English
Wikidiffcom has no English definition. It may be misspelled. merperson
English
Noun
(en-noun)
A mythological creature with a human upper half (head, arms, and torso) and a piscine lower half.
Hyponyms
* (female) mergirl, merlady, mermaid, mermaiden, merwoman
* (male) merboy, merguy, merlad, merman
* (parent) merfather, mermother
* (young) merbaby, merchild, merteen