Having a tail shaped like a fan; spreading out in a fan-like pattern.
From 'fantail' + '-ed' (adjective suffix). The '-ed' ending creates an adjective describing something that possesses or displays the characteristic of a fantail.
When you see '-ed' on words like 'fantailed,' it can mean either 'past tense' (I fantailed the pigeon) or 'adjective' (a fantailed bird), which shows how English reuses the same ending for multiple grammatical jobs, causing constant ambiguity.
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