Entry Word: sustainable

Function: adjective

Meaning: 1 capable of being defended with good reasoning against verbal attack <a line of argument probably not sustainable in a public debate against tough opponents> — see tenable 1
2 capable of being proven as true or real <has no sustainable claim to the property without a deed or some other document> — see verifiable
3 capable of being endured <the general didnʼt think that such heavy casualties could be sustainable for much longer> — see bearable