We are running around, so I’m awfully dreary (9)
I believe the answer is:
wearisome
'dreary' is the definition.
(synonyms)
'we are running around so i'm awfully' is the wordplay.
'are' becomes 'a' (short for 'are', historical unit of measurement).
'running' becomes 're' (I can't justify this - if you can you should believe this answer much more).
'around' means one lot of letters goes inside another.
'awfully' is an anagram indicator.
'so'+'im'='soim'
'soim' anagrammed gives 'isom'.
're' placed around 'isom' is 'risome'.
'we'+'a'+'risome'='WEARISOME'
Can you help me to learn more?
(Other definitions for wearisome that I've seen before include "Boring" , "Vexatious" , "Tedious, tiring" , "pestilential" , "Trying" .)