D defs.my
Entry 1 sense Webster, 1913

Sustainable

/səs-tān'-əb-əl/ · Sus·tain·a·ble · IPA /səˈsteɪnəbəl/
01 a. Capable of being sustained or maintained; as, the action is not sustainable.
  1. 1.
    Capable of being sustained or maintained; as, the action is not sustainable.