Antonyms of adj steam-powered

1 sense of steam-powered

Sense 1
steam-powered -- (powered by a steam engine; "a steam-powered locomotive")

INDIRECT (VIA powered) -> unpowered -- (not having or using power; "an autogiro is supported in flight by unpowered rotating wings")

Similarity of adj steam-powered

1 sense of steam-powered

Sense 1
steam-powered -- (powered by a steam engine; "a steam-powered locomotive")
       => powered (vs. unpowered) -- ((often used in combination) having or using or propelled by means of power or power of a specified kind; "powered flight"; "kerosine-powered jet engines")