Antonyms of adj worthless

2 senses of worthless

Sense 1
worthless (vs. valuable) -- (lacking in usefulness or value; "a worthless idler")

valuable (vs. worthless) -- (having great material or monetary value especially for use or exchange; "a valuable diamond")
        => blue-chip -- (extremely valuable; "Rembrandt is considered a blue-chip artist")
        => invaluable, priceless -- (having incalculable monetary, intellectual, or spiritual worth)
        => precious -- (of high worth or cost; "diamonds, sapphires, rubies, and emeralds are precious stones")
        => rich -- (of great worth or quality; "a rich collection of antiques")
        => semiprecious -- (used of gemstones having less commercial value than precious stones; "such semiprecious stones as amethyst, garnet, jade, and tourmaline")
        => worth (predicate) -- (having a specified value; "not worth his salt"; "worth her weight in gold")

Sense 2
despicable, ugly, vile, slimy, unworthy, worthless, wretched -- (morally reprehensible; "would do something as despicable as murder"; "ugly crimes"; "the vile development of slavery appalled them"; "a slimy little liar")

INDIRECT (VIA evil) -> good -- (morally admirable)

Similarity of adj worthless

2 senses of worthless

Sense 1
worthless (vs. valuable) -- (lacking in usefulness or value; "a worthless idler")
       => chaffy -- (value; "an empty chaffy book by a foolish chaffy fellow")
       => good-for-nothing, good-for-naught, meritless, no-account, no-count, no-good, sorry -- (without merit; "a sorry horse"; "a sorry excuse"; "a lazy no-count, good-for-nothing goldbrick"; "the car was a no-good piece of junk")
       => manky -- (inferior and worthless)
       => negligible, paltry, trifling -- (not worth considering; "he considered the prize too paltry for the lives it must cost"; "piffling efforts"; "a trifling matter")
       => nugatory -- (of no real value; "a nugatory law")
       => otiose, pointless, purposeless, senseless, superfluous, wasted -- (serving no useful purpose; having no excuse for being; "otiose lines in a play"; "advice is wasted words"; "a pointless remark"; "a life essentially purposeless"; "senseless violence")
       => rubbishy, trashy -- (cheap and inferior; of no value; "rubbishy newspapers that form almost the sole reading of the majority"; "trashy merchandise")
       => tinpot (prenominal) -- (inferior (especially of a country's leadership); "he's a tinpot Hitler")
       => valueless -- (of no value)
          Also See-> unworthy#1

Sense 2
despicable, ugly, vile, slimy, unworthy, worthless, wretched -- (morally reprehensible; "would do something as despicable as murder"; "ugly crimes"; "the vile development of slavery appalled them"; "a slimy little liar")
       => evil (vs. good) -- (morally bad or wrong; "evil purposes"; "an evil influence"; "evil deeds")