One and only (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one and only</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for unique that I've seen before include "One-off" , "Individual" , "Unlike anything else" , "Radically distinctive and without equal" , "Singular, one of a kind" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one and only</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sole that I've seen before include "A lone sort of fish - lose it" , "Exclusive class of fish" , "swimmer" , "Lone; part of foot" , "A fish; part of shoe" .)