Flummoxed (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">flummoxed</span>' is the definition.<br/ ><span class="explanation-format__explanation">('baffle' can be a synonym of 'flummox')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for baffled that I've seen before include "Perplexed" , "Completely mystified" , "Frustrated" , "Confused" .)
(Other definitions for all at sea that I've seen before include "state of confusion" , "Rescuers at Dunkirk were thus" , "Completely confused on voyage?" , "Entire fleet's" , "Bewildered" .)
(Other definitions for tripped up that I've seen before include "Made a mistake" , "stumbled" , "Came a cropper" .)