Antonyms of adj self-sustaining

1 sense of self-sustaining

Sense 1
self-sufficient, self-sufficing, self-sustaining -- (able to provide for your own needs without help from others; "a self-sufficing economic unit")

INDIRECT (VIA independent) -> dependent -- (relying on or requiring a person or thing for support, supply, or what is needed; "dependent children"; "dependent on moisture")

Similarity of adj self-sustaining

1 sense of self-sustaining

Sense 1
self-sufficient, self-sufficing, self-sustaining -- (able to provide for your own needs without help from others; "a self-sufficing economic unit")
       => independent (vs. dependent) -- (free from external control and constraint; "an independent mind"; "a series of independent judgments"; "fiercely independent individualism")