Omit in speech (5)
I believe the answer is:
elide
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">omit in speech</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 elide that I've seen before include "Omit (syllable) in speech" , "Omit part of word" , "Omit (a sound or syllable) when speaking" , "Leave out, vowels perhaps" , "Omit vowel or syllable" .)