Antonyms of adj biodegradable

1 sense of biodegradable

Sense 1
biodegradable -- (capable of being decomposed by e.g. bacteria; "a biodegradable detergent")

INDIRECT (VIA perishable) -> imperishable -- (not perishable)

Similarity of adj biodegradable

1 sense of biodegradable

Sense 1
biodegradable -- (capable of being decomposed by e.g. bacteria; "a biodegradable detergent")
       => perishable (vs. imperishable) -- (liable to perish; subject to destruction or death or decay; "this minute and perishable planet"; "perishable foods such as butter and fruit")