Stumbled (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stumbled</span>' is the definition.<br/ ><span class="explanation-format__explanation">('trip' can be a synonym of 'stumble')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tripped that I've seen before include "Missed a step, stumbled" , "Came a cropper" , "Took acid" .)
(Other definitions for staggered that I've seen before include "Arranged to take place at intervals" , "not to be starting together" , "Lurched, reeled" , "Amazed" , "Did floor" .)