Though socially acceptable in time it gives one the shivers! (4)
I believe the answer is:
ague
'one the shivers' is the definition.
(I've seen this in another clue)
'though socially acceptable in time it' is the wordplay.
I cannot quite see how this works, but
'acceptable' could be 'u' (as in U and non-U speech) and 'u' is present in the answer.
'time' could be 'age' (an age is a period of time) and 'age' is found within the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
'gives' acts as a link.
Can you help me to learn more?
(Other definitions for ague that I've seen before include "Feverish illness" , "Feverish chill" , "met with cheek in Twelfth Night" , "Feverish fit" , "Old word for fever" .)