Right off (11)
I believe the answer is:
immediately
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">right off</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for immediately that I've seen before include "Right now" , "Straight away" .)