The use of authority, influence, or other power to force (compel) a person or persons to act.
An irrational need or irresistible urge to perform some action, often despite negative consequences.
The lawful use of violence (i.e. by the administration).
To replace (a player) with a substitute.
To substitute for.
To lend.
To subscribe.
To take a submissive role.
To coat with a layer of adhering material; to planarize by means of such a coating.
To work as a substitute teacher, especially in primary and secondary education.
To prepare (a slide) with a layer of transparent substance to support and/or fix the sample.
Less commonly, and often as sub on, to bring on (a player) as a substitute.
To subtitle (usually a film or television program).
To perform the work of a subeditor or copy editor; to subedit.
Under.
Subsistence money: part of a worker's wages paid before the work is finished.
A subtitle.
A submarine sandwich: a sandwich made on a long bun.
A subroutine (sometimes one that does not return a value, as distinguished from a function, which does).
A substitute, often in sports or teaching.
A subcontractor.
A subeditor.
A submarine.
A subwoofer.
A subscription: a payment made for membership of a club, etc.
A submissive.
A subscription (or (by extension) a subscriber) to an online channel or feed.