1.  sustain(v = verb.stative) keep up, prolong - lengthen or extend in duration or space; "We sustained the diplomatic negotiations as long as possible"; "prolong the treatment of the patient"; "keep up the good work"
is one way to bear on, carry on, continue, preserve, uphold
Derived forms adjective sustainable₁, noun sustainer₁, noun sustenance₃
Sample sentences: Somebody ----s something; Something ----s something

2.  sustain(v = verb.body) get, have, suffer - undergo (as of injuries and illnesses); "She suffered a fracture in the accident"; "He had an insulin shock after eating three candy bars"; "She got a bruise on her leg"; "He got his arm broken in the scuffle"
is one way to experience, get, have, receive
Sample sentences: Somebody ----s something

3.  sustain(v = verb.consumption) nourish, nurture - provide with nourishment; "We sustained ourselves on bread and water"; "This kind of food is not nourishing for young children"
is one way to cater, ply, provide, supply
Derived forms adjective sustainable₁, noun sustainment₁, noun sustenance₁
Sample sentences: Somebody ----s somebody; Something ----s somebody

4.  sustain(v = verb.consumption) keep, maintain - supply with necessities and support; "She alone sustained her family"; "The money will sustain our good cause"; "There's little to earn and many to keep"
is one way to have, have got, hold
Derived form noun sustenance₂
Sample sentences: Somebody ----s something; Somebody ----s somebody; Something ----s somebody; Something ----s something

5.  sustain(v = verb.contact) hold, hold up, support - be the physical support of; carry the weight of; "The beam holds up the roof"; "He supported me with one hand while I balanced on the beam"; "What's holding that mirror?"
Sample sentences: Somebody ----s something; Somebody ----s somebody; Something ----s somebody; Something ----s something

6.  sustain(v = verb.communication) - admit as valid; "The court sustained the motion"
is one way to acknowledge, admit
Derived form adjective sustainable₁
Sample sentences: Somebody ----s something

7.  sustain(v = verb.cognition) affirm, confirm, corroborate, substantiate, support - establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant"
Derived form adjective sustainable₁
Sample sentences: Somebody ----s something; Something ----s something; Somebody ----s that CLAUSE

1.  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. [1913 Webster]
"Every pillar the temple to sustain." [1913 Webster]

2.  Hence, to keep from sinking, as in despondence, or the like; to support. [1913 Webster]
"No comfortable expectations of another life to sustain him under the evils in this world." [1913 Webster]

3.  To maintain; to keep alive; to support; to subsist; to nourish; as, provisions to sustain an army. [1913 Webster]

4.  To aid, comfort, or relieve; to vindicate. Shak. [1913 Webster]
"His sons, who seek the tyrant to sustain." [1913 Webster]

5.  To endure without failing or yielding; to bear up under; as, to sustain defeat and disappointment. [1913 Webster]

6.  To suffer; to bear; to undergo. [1913 Webster]
"Shall Turnus, then, such endless toil sustain?" [1913 Webster]
"You shall sustain more new disgraces." [1913 Webster]

7.  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. [1913 Webster]

8.  To prove; to establish by evidence; to corroborate or confirm; to be conclusive of; as, to sustain a charge, an accusation, or a proposition. [1913 Webster]

   One who, or that which, upholds or sustains; a sustainer. [1913 Webster]
"I waked again, for my sustain was the Lord." [1913 Webster]

sustain, v.tr.
1 support, bear the weight of, esp. for a long period.
2 give strength to; encourage, support.
3 (of food) give nourishment to.
4 endure, stand; bear up against.
5 undergo or suffer (defeat or injury etc.).
6 (of a court etc.) uphold or decide in favour of (an objection etc.).
7 substantiate or corroborate (a statement or charge).
8 maintain or keep (a sound, effort, etc.) going continuously.
9 continue to represent (a part, character, etc.) adequately.

Derivative:
sustainable adj. sustainedly adv. sustainer n. sustainment n.

Etymology:
ME f. AF sustein-, OF so(u)stein- stressed stem of so(u)stenir f. L sustinere sustent- (as SUB-, tenere hold)

VB  preserve, maintain, keep, sustain, support, hold, keep up, keep alive, refrigerate, keep on ice, not willingly let die, bank up, nurse, save, rescue, be safe, make safe, take care of, guard, stare super antiquas vias, hold one's own, hold one's ground, stand one's ground, embalm, cure, salt, pickle, season, kyanize, bottle, pot, tin, can, sterilize, pasteurize, radiate, dry, lyophilize, freeze- dry, concentrate, evaporate, freeze, quick-freeze, deep-freeze, husband.

VB  aid, assist, help, succor, lend one's aid, come to the aid, of, contribute, subscribe to, bring aid, give aid, furnish aid, afford aid, supply aid, give a helping hand, stretch a hand, lend a helping hand, lend a hand, bear a helping hand, hold out a hand, hold out a helping hand, give one a life, give one a cast, give one a turn, take by the hand, take in tow, help a lame dog over a stile, lend wings to, relieve, rescue, set up, set agoing, set on one's legs, bear through, pull through, give new life to, be the making of, reinforce, reenforce, recruit, set forward, put forward, push forward, give a lift, give a shove, give an impulse to, promote, further, forward, advance expedite, speed, quicken, hasten, support, sustain, uphold, prop, hold up, bolster, cradle, nourish, nurture, nurse, dry nurse, suckle, put out to nurse, manure, cultivate, force, foster, cherish, foment, feed the flame, fan the flame, serve, do service to, tender to, pander to, administer to, subminister to, minister to, tend, attend, wait on, take care of, entertain, smooth the bed of death, oblige, accommodate, consult the wishes of, humor, cheer, encourage, second, stand by, back, back up, pay the piper, abet, work for, make interest for, stick up for, take up the cudgels for, take up the cause of, espouse the cause of, adopt the cause of, advocate, beat up for recruits, press into the service, squire, give moral support to, keep in countenance, countenance, patronize, lend oneself to, lend one's countenance to, smile upon, shine upon, favor, befriend, take in hand, enlist under the banners of, side with, be of use to, subserve, benefit, render a service, conduce.

VB  continue, persist, go on, jog on, keep on, run on, hold on, abide, keep, pursue, stick to its course, take its course, maintain its course, carry on, keep up, sustain, uphold, hold up, keep on foot, follow up, perpetuate, maintain, preserve, harp upon, keep going, keep alive, keep the pot boiling, keep up the ball, keep up the good work, die in harness, die with one's boots on, hold on the even tenor of one's way, pursue the even tenor of one's way, let be, stare super antiquas vias, quieta non movere, let things take their course, stare decisis (Jurisprudence).

VB  be strong, be stronger, overmatch, render strong, give strength, strengthen, invigorate, brace, nerve, fortify, sustain, harden, case harden, steel, gird, screw up, wind up, set up, gird up one's loins, brace up one's loins, recruit, set on one's legs, vivify, refresh, refect, reinforce, reenforce.

VB  feel, receive an impression, be impressed with, entertain feeling, harbor feeling, cherish feeling, respond, catch the flame, catch the infection, enter the spirit of, bear, suffer, support, sustain, endure, thole, aby, abide, experience, taste, prove, labor under, smart under, bear the brunt of, brave, stand, swell, glow, warm, flush, blush, change color, mantle, turn color, turn pale, turn red, turn black in the face, tingle, thrill, heave, pant, throb, palpitate, go pitapat, tremble, quiver, flutter, twitter, shake, be agitated, be excited, look blue, look black, wince, draw a deep breath, impress.

VB  be in action, operate, work, act, act upon, perform, play, support, sustain, strain, maintain, take effect, quicken, strike, come play, come bring into operation, have play, have free play, bring to bear upon.

VB  be supported, lie on, sit on, recline on, lean on, loll on, rest on, stand on, step on, repose on, abut on, bear on, be based on, have at one's back, bestride, bestraddle, support, bear, carry, hold, sustain, shoulder, hold up, back up, bolster up, shore up, uphold, upbear, prop, under prop, under pin, under set, riprap, bandage, give support, furnish support, afford support, supply support, lend support, give foundations, furnish foundations, afford foundations, supply foundations, lend foundations, bottom, found, base, ground, imbed, embed, maintain, keep on foot, aid.