Disturbing to see vice-president losing head during call (6)
I believe the answer is:
creepy
'disturbing' is the definition.
(I've seen this before)
'vice-president losing head during call' is the wordplay.
'vice-president' becomes 'veep' (I've seen this before).
'losing head' means to remove the first letter.
'during' means one lot of letters goes inside another.
'call' becomes 'cry' ('cry' can be a synonym of 'call').
'veep' with its first letter removed is 'eep'.
'eep' inserted into 'cry' is 'CREEPY'.
'to see' is the link.
(Other definitions for creepy that I've seen before include "horror" , "repulsive" , "Disturbing and sinister" , "Likely to cause goose pimples" , "Threatening" .)