Ad infinitum (2,3,2)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ad infinitum</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for on and on that I've seen before include "Incessantly" , "At tedious length" , "Unceasingly" , "Continuing or continually" , "Ever" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ad infinitum</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>