<p><strong>Adjective</strong></p><ul><li>Capable of being supported or upheld, as by having its weight borne from below.</li><li>Pertaining to a system that maintains its own viability by using techniques that allow for continual reuse: sustainable agriculture.</li><li>Aquaculture is a sustainable alternative to overfishing.</li><li>Able to be maintained or kept going, as an action or process: a sustainable negotiation between the two countries.</li><li>Able to be confirmed or upheld: a sustainable decision.</li><li>Able to be supported as with the basic necessities or sufficient funds: a sustainable life.</li></ul>