Smart Definition
Etymology
Pronunciation
sustentable
sustainable
sustain
to maintain or support
+
-able
adjective suffix meaning 'capable of'
Sustentable means sustainable and can be thought of as sustain0 (to maintain or support0) + -able1 (capable of1).
adjective
  1. sustainable
    Capable of being maintained or sustained, especially without depleting natural resources
    Debemos adoptar prácticas más sustentables para proteger el medio ambiente. // We must adopt more sustainable practices to protect the environment.