Fatiguing (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fatiguing</span>' is the definition.<br/ ><span class="explanation-format__explanation">('tire' can be a synonym of 'fatigue')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tiring that I've seen before include "Wearying, exhausting" , "Wearisome" , "Boring" , "Growing weary or bored" , "Becoming sleepy" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fatiguing</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 tiresome that I've seen before include "Causing impatience" , "Rather boring" , "Boring, irksome (colloq.)" , "Causing boredom" , "Tedious and boring" .)