Fear greatly (5)
I believe the answer is:
dread
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fear greatly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dread that I've seen before include "Get cold feet" , "great anxiety" , "Apprehensive fear" , "Hairstyle" , "Adder (anag)" .)