Serving no purpose (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">serving no purpose</span>' is the definition.<br/ ><span class="explanation-format__explanation">(having no purpose or function)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for useless that I've seen before include "to no avail" , "Vain - unavailing" , "Is Sue less impractical?" , "Unserviceable" , "Good-for-nothing" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">serving no purpose</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 otiose that I've seen before include "Serving no good purpose" , "O so tie up and be vain and empty" , "unnecessary to say" , "Idle, empty" , "Indolent, lazy" .)