To keep from falling.
To be designed (said of machinery, electronics, or computers, or their parts, accessories, peripherals, or programming) to function compatibly with or provide the capacity for.
To help, particularly financially.
To back a cause, party, etc., mentally or with concrete aid.
To serve, as in a customer-oriented mindset; to give support to.
To verify; to make good; to substantiate; to establish; to sustain.
To answer questions and resolve problems regarding something sold.
To be accountable for, or involved with, but not responsible for.
To assume and carry successfully, as the part of an actor; to represent or act; to sustain.