COSTLESS Antonyms There are 7 antonyms of the word costless. (opposite meanings)Did you mean?Definition of COSTLESSAlso try opposite words for..costcostlyBest Opposite Words For COSTLESSTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1costlyadjectiveadj2dearnounn3expensiveadjectiveadj4high-pricedadjectiveadj5premiumnoun, adjectiven, adj6pricyadjectiveadj7valuableadjectiveadj Alternatives for COSTLY Words (7)dearhigh-pricedpriceyexpensivevaluabledearly-wonpricyOpposite words for costly Alternatives for DEAR Words (29)darlingbelovedadoredcherishedlovedpreciousspecialtreasuredvalueddearlyaffectionatelybabycostlydearestdeariedearydevoutearnestgoodheartfelthigh-pricedhoneylamblovenearpriceypricysweetheartsweetieOpposite words for dear Alternatives for EXPENSIVE Words (9)costlydearexorbitanthigh-pricedlavishluxuriousoverpricedpriceyvaluableOpposite words for expensive Alternatives for HIGH-PRICED Words (11)costlydearexpensiveextravagantlavishluxuriousposhupscalevaluablepriceypricyOpposite words for high-priced Alternatives for PREMIUM Words (15)choicedeluxeexclusivefancyfirst-classluxuriousselectsuperiortop-notchtop-qualityupscalefinestagioagiotagebountyPhrases (2)exchange premiuminsurance premiumOpposite words for premium Alternatives for PRICY Words (12)costlydearhigh-pricedpriceyexorbitantexpensiveextravagantlavishoverpricedpremiumupscalevaluableOpposite words for pricy Alternatives for VALUABLE Words (19)admirablecherishedcostlydearesteemedexpensivehigh-pricedimportantinvaluableirreplaceablepreciousprestigiouspricelesssignificanttreasuredworthwhileprizedworthfulworthyOpposite words for valuable