Forenoon (4)
I believe the answer is:
morn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">forenoon</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for morn that I've seen before include "PM? No" , "Day's first part(poetic)" , "First part of day (poet.)" , "Early part of day (poetic)" .)