formal or humorous erring or straying from the accepted course or standards.
archaic or literary travelling in search of adventure. See also knight errant.
Zoology (of a polychaete worm) of a predatory kind that moves about actively and is not confined to a tube or burrow.
Derivative
errancyn.
errantryn.
Etymology
ME: sense 1 from L. errant-, errare ‘err’; sense 2 from OFr. errant ‘travelling’, pres. part. of errer, from late L. iterare ‘go on a journey’, from iter ‘journey’.
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