Frequently (in poetry) (3)
I believe the answer is:
oft
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">frequently in poetry</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for oft that I've seen before include "Many times, of old" , "Many a time to the poet." , "Many times (archaic)" , "''... in the stilly night'' (Moore melody)" , "Quite frequently, according to the poet" .)