to support, hold, or bear up from below; bear the weight of, as a structure.

to bear (a burden, charge, etc.).

to undergo, experience, or suffer (injury, loss, etc.); endure without giving way or yielding.

to keep (a person, the mind, the spirits, etc.) from giving way, as under trial or affliction.

to keep up or keep going, as an action or process

to sustain a conversation.

to supply with food, drink, and other necessities of life.

to provide for (an institution or the like) by furnishing means or funds.

to support (a cause or the like) by aid or approval.

to uphold as valid, just, or correct, as a claim or the person making it

The judge sustained the lawyer's objection.

to confirm or corroborate, as a statement

Further investigation sustained my suspicions.