Breathtaking (3-9)
I believe the answer is:
awe-inspiring
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">breathtaking</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for awe-inspiring that I've seen before include "Magnificent" , "Wondrous" , "Breathtaking" , "Terribly impressive" , "Astonishing" .)