Gloss over, vocally (5)
I believe the answer is:
elide
'gloss over vocally' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elide that I've seen before include "Join together, merge" , "Leave out, vowels perhaps" , "Omit (a vowel etc.)" , "Cut off" , "Omit (syllables)" .)