Ultimatum word (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ultimatum word</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>
(Other definitions for either that I've seen before include "Her tie (anag.)" , "Word introducing first of two 16s" , "Word introducing first alternative" , "One of two alternatives" , "offered a choice" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ultimatum word</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 unless that I've seen before include "Otherwise than if" , "Conditional on" , "Except, save" , "Except on the condition that" , "Though" .)