A person or thing that tangles or creates confusion and twisted situations.
From 'entangle' plus '-er' (agent noun suffix meaning 'one who does'). The '-er' suffix has Germanic roots and has marked agents since Old English.
The '-er' suffix is wonderfully productive: from almost any verb you can create an agent noun (teacher, swimmer, speaker, runner), which is why English allows speakers to invent new job titles so easily.
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