1. sustain - Noun
2. sustain - Verb
To keep from falling; to bear; to uphold; to support; as, a foundation sustains the superstructure; a beast sustains a load; a rope sustains a weight.
Hence, to keep from sinking, as in despondence, or the like; to support.
To maintain; to keep alive; to support; to subsist; to nourish; as, provisions to sustain an army.
To endure without failing or yielding; to bear up under; as, to sustain defeat and disappointment.
To suffer; to bear; to undergo.
To allow the prosecution of; to admit as valid; to sanction; to continue; not to dismiss or abate; as, the court sustained the action or suit.
To prove; to establish by evidence; to corroborate or confirm; to be conclusive of; as, to sustain a charge, an accusation, or a proposition.
One who, or that which, upholds or sustains; a sustainer.
Source: Webster's dictionarySo long as the human spirit thrives on this planet, music in some living form will accompany and sustain it. Aaron Copland
Arc, amplitude, and curvature sustain a similar relation to each other as time, motion, and velocity, or as volume, mass, and density. Carl Friedrich Gauss
No insect hangs its nest on threads as frail as those which will sustain the weight of human vanity. Edith Wharton
Little chips kindle fire, and big logs sustain it. Portuguese Proverb
Heavy purses and light hearts can sustain much. Dutch Proverb
The ocean gives and sustain life to the worthy. Maori Proverb