Antonyms of adj heavier-than-air

1 sense of heavier-than-air

Sense 1
heavier-than-air -- (relating to an aircraft heavier than the air it displaces)

INDIRECT (VIA heavy) -> light -- (of comparatively little physical weight or density; "a light load"; "magnesium is a light metal--having a specific gravity of 1.74 at 20 degrees C")

Similarity of adj heavier-than-air

1 sense of heavier-than-air

Sense 1
heavier-than-air -- (relating to an aircraft heavier than the air it displaces)
       => heavy (vs. light) -- (of comparatively great physical weight or density; "a heavy load"; "lead is a heavy metal"; "heavy mahogany furniture")