Everyone supporting leader of Tories? That's not credible (4)
I believe the answer is:
tall
'not credible' is the definition.
I can't tell whether this defines the answer.
'everyone supporting leader of tories?' is the wordplay.
'everyone' becomes 'all' (all people).
'supporting' is a charade indicator (letters next to each other) (in a down clue, some letters go below others).
'leader of' suggests taking the first letters.
The first letter of 'tories' is 't'.
'all' after 't' is 'TALL'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for tall that I've seen before include "Above average height" , "Like giants" , "Vertically large" , "Of great stature" , "that's hard to swallow" .)