Infrequent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">infrequent</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rare that I've seen before include "Exceptional" , "Exceptionable" , "Not often seen - underdone" , "Seldom encountered" , "thin on the ground" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">infrequent</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for occasional that I've seen before include "Occurring infrequently" , "Irregularly occurring" , "Rare" , "Periodic" , "Happening now and again" .)