Poetic frequency (3)
I believe the answer is:
oft
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">poetic frequency</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for oft that I've seen before include "Frequently, as the poet would have it" , "(In poetry) frequently" , "Consistently" , "Many a time to the poet." , "Frequently (poetic)" .)