rule somebody out

Từ điển Oxford Advanced Learner 8th

ˌrule sb/sthˈout derived
1. ~ (as sth) to state that sth is not possible or that sb/sth is not suitable
Syn: ↑exclude
• Police have not ruled out the possibility that the man was murdered.
• The proposed solution was ruled out as too expensive.
2. to prevent sb from doing sth; to prevent sth from happening
• His age effectively ruled him out as a possible candidate.
Main entry: ↑rule_derived