Antonyms of adj lightly-armed

1 sense of lightly-armed

Sense 1
light-armed, lightly-armed -- (armed with light weapons)

INDIRECT (VIA light) -> heavy -- (of the military or industry; using (or being) the heaviest and most powerful armaments or weapons or equipment; "heavy artillery"; "heavy infantry"; "a heavy cruiser"; "heavy guns"; "heavy industry involves large-scale production of basic products (such as steel) used by other industries")

Similarity of adj lightly-armed

1 sense of lightly-armed

Sense 1
light-armed, lightly-armed -- (armed with light weapons)
       => light (vs. heavy) -- (of the military or industry; using (or being) relatively small or light arms or equipment; "light infantry"; "light cavalry"; "light industry"; "light weapons")