Antonyms of adj valueless

1 sense of valueless

Sense 1
valueless -- (of no value)

INDIRECT (VIA worthless) -> valuable -- (having great material or monetary value especially for use or exchange; "a valuable diamond")

Similarity of adj valueless

1 sense of valueless

Sense 1
valueless -- (of no value)
       => worthless (vs. valuable) -- (lacking in usefulness or value; "a worthless idler")