Expressions of grief upset boss (4)
I believe the answer is:
sobs
'expressions' is the definition.
(I know this)
'grief upset boss' is the wordplay.
'boss' anagrams to 'SOBS'.
Though, I'm unsure how the anagram is indicated.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for sobs that I've seen before include "Weeps noisily" , "cries uncontrollably" , "Weeps heavily for boss" , "Cries loudly" , "Weeps audibly" .)