I've dealt with bosses who are prone to fixations (9)
I believe the answer is:
obsessive
'are prone to fixations' is the definition.
I can't judge whether this defines the answer.
'i've dealt with bosses' is the wordplay.
'dealt with' indicates an anagram.
'ive' mixed up with 'bosses' can make 'OBSESSIVE'.
'who' is the link.
Can you help me to learn more?
(Other definitions for obsessive that I've seen before include "Unable to let go" , "Compulsive, all-consuming" , "Compulsive, fixated" , "Showing continual preoccupation" , "Under a strong compulsion" .)