This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Expressing antithesis or opposition: the adversative conjunction but.

n. A word that expresses antithesis or opposition.

adj. Expressing opposition or difference.

n. Something, particularly a clause or conjunction, which is adversative.

adj. Expressing contrariety, opposition, or antithesis; ); an adversative force.

n. An adversative word.

Expressing difference, contrariety, opposition, or antithesis: as, an adversative conjunction.

Of adverse nature; inimical.

n. A word or proposition denoting contrariety or opposition.

adj. expressing antithesis or opposition

"Each of these terms has its own adversative nuances, so you should let context guide your selection."

disjunctive   

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enumerative    conjunctive    religion    copulative    seventh-round    one-step    non-transferable    run-on    autoregressive    96th