NSW Opportunity Class
Adversarial
adjective/ad-ver-SAIR-ee-uhl/
Involving opposition or conflict, like enemies on opposite sides.
In contextAn adversarial mood spoiled what should have been a friendly match.
Remember it
Adversarial holds 'adversary' (enemy) — it means acting like opponents.
Use it well
Use for tense, us-versus-them situations; more formal than 'unfriendly'.