Anti-strike action by rugby player - unacceptable (7)
I believe the answer is:
lockout
'anti-strike action' is the definition.
I can't tell whether this defines the answer.
'by rugby player unacceptable' is the wordplay.
'by' says to put letters next to each other.
'rugby player' becomes 'lock' (position in rugby).
'unacceptable' becomes 'out' (out can mean incorrect or inappropriate).
'lock' put next to 'out' is 'LOCKOUT'.
Can you help me to learn more?
(Other definitions for lockout that I've seen before include "Labour dispute" , "management action" .)