Sustainment

verb (used with object)
1.
to support, hold, or bear up from below; bear the weight of, as a structure.
2.
to bear (a burden, charge, etc.).
3.
to undergo, experience, or suffer (injury, loss, etc.); endure without giving way or yielding.
4.
to keep (a person, the mind, the spirits, etc.) from giving way, as under trial or affliction.
5.
to keep up or keep going, as an action or process:
to sustain a conversation.
6.
to supply with food, drink, and other necessities of life.
7.
to provide for (an institution or the like) by furnishing means or funds.
8.
to support (a cause or the like) by aid or approval.
9.
to uphold as valid, just, or correct, as a claim or the person making it:
The judge sustained the lawyer’s objection.
10.
to confirm or corroborate, as a statement:
Further investigation sustained my suspicions.
verb (transitive)
1.
to hold up under; withstand: to sustain great provocation
2.
to undergo (an injury, loss, etc); suffer: to sustain a broken arm
3.
to maintain or prolong: to sustain a discussion
4.
to support physically from below
5.
to provide for or give support to, esp by supplying necessities: to sustain one’s family, to sustain a charity
6.
to keep up the vitality or courage of
7.
to uphold or affirm the justice or validity of: to sustain a decision
8.
to establish the truth of; confirm
noun
9.
(music) the prolongation of a note, by playing technique or electronics