Uncomfortable allies sloshed eating meal (3,2,4)
I believe the answer is:
ill at ease
'uncomfortable' is the definition.
(being ill at ease is being uncomfortable or uneasy)
'allies sloshed eating meal' is the wordplay.
'sloshed' indicates an anagram.
'eating' is an insertion indicator.
'meal' becomes 'tea' (tea is a type of meal).
'allies' with letters rearranged gives 'illase'.
'illase' going around 'tea' is 'ILL-AT-EASE'.
(Other definitions for ill at ease that I've seen before include "Embarrassed" , "Fidgety" , "Elite, alas? (Anag)" , "Nervous, uncomfortable" , "Unsettled, anxious" .)