To substitute; to take somebody's place.
sit tight
To wait patiently; to take no action; to remain quiet or relatively mo…
sit still
To accept, tolerate, or acquiesce.
sit on one's hands
To remain idle when action is needed, perhaps because of fear, ignoran…
sit on
To block, suppress, restrain (something).
sit back
To relax, to not exert oneself.
sit through
To unwillingly stay seated until the end of an event.