If a certain condition were not met; used to indicate that a particular person, event, etc. prevented a certain outcome.

Alternative form of if it were not for

Alternative form of if only the tsar knew

If somebody at the top of an abusive hierarchy was aware of the abuses, they might take action to stop them.

A likely condition.

If not older; at least.

(US, colloquial, humorous) It is in plain sight; one should be able to see it for oneself.

(idiomatic, derogatory) Alternative form of like someone owns the place

(informal, humorous) Used to signify a reference or allusion to something that is only understood by certain groups of people.

(Oxford University, historical) Former name of Wolfson College, Oxford.