Executrix

2 clues
She may oversee an estate
Woman with great will power?
Similar answers:
Accountexecutive
Adexec
Adexecs
Chiefexecutive
Chiefexecutives
Chiefsexecutive
Countyexecutive
Exec
Execrable
Execrate
Execrated
Execs
Executable
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Executed
Executer
Executes
Executing
Execution
Executioner