Always spoken with an air (3)
'always' is the definition.
(synonyms)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for eer that I've seen before include "Always (poetic)" , "Ever poetically" , "Ever to the poet (3)." , "Before, poetically speaking (1'2)" , "Always (poetical)" .)
'an air' is the definition.
(thesaurus)
'always spoken with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'WAY' is hidden in the letters of 'always spoken'.
(Other definitions for way that I've seen before include "Path" , "Method; route" , "'Manner, mode (3)'" , "Manner; road" , "Street" .)