Antonyms of adj weightless

1 sense of weightless

Sense 1
weightless (vs. weighty) -- (having little or no weight or apparent gravitational pull; light; "floating freely in a weightless condition"; "a baby bat...fluffy and weightless as a moth"; "jackets made of a weightless polyester fabric")

weighty (vs. weightless) -- (having relatively great weight; heavy; "a weighty load"; "a weighty package")

Similarity of adj weightless

1 sense of weightless

Sense 1
weightless (vs. weighty) -- (having little or no weight or apparent gravitational pull; light; "floating freely in a weightless condition"; "a baby bat...fluffy and weightless as a moth"; "jackets made of a weightless polyester fabric")