Speech characteristic (4)
I believe the answer is:
lisp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">speech characteristic</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lisp that I've seen before include "Have difficulty pronouncing `s'" , "Speak with defective sibilants" , "Talk like thith" , "speak imperfectly" , "Thpeak like thith" .)