Antonyms of adj low-powered

1 sense of low-powered

Sense 1
low-powered -- (having little power to do work; "a low-powered engine")

INDIRECT (VIA powerless) -> powerful -- (having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument")

Similarity of adj low-powered

1 sense of low-powered

Sense 1
low-powered -- (having little power to do work; "a low-powered engine")
       => powerless (vs. powerful) -- (lacking power)