Relieve everyone - I've tea brewing (9)
I believe the answer is:
alleviate
'relieve' is the definition.
(synonyms)
'everyone i've tea brewing' is the wordplay.
'everyone' becomes 'all' (all people).
'brewing' indicates an anagram.
'ive'+'tea'='ivetea'
'ivetea' is an anagram of 'eviate'.
'all'+'eviate'='ALLEVIATE'
(Other definitions for alleviate that I've seen before include "Make less severe, say suffering" , "bring relief" , "Assuage" , "Make better" , "moderate" .)