Thin and bony (7)
(Other definitions for angular that I've seen before include "Bony - lean - gaunt" , "stiff" , "Having sharp lines and corners" , "Pointed" , "With prominent bone structure" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">thin and bony</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for scrawny that I've seen before include "Being underweight" , "Thin -- underfed" , "Skin-and-bones" , "Skinny" , "Meagre" .)