Wryly amusing (6)
I believe the answer is:
ironic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wryly amusing</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 ironic that I've seen before include "Double-edged" , "Wry, sardonic" , "Sarcastic or deliberately perverse" , "Wryly satirical" , "Humorously sarcastic or mocking" .)