adversarial /ad-vər-sāˈri-əl/

1. Combative
2. Antagonistic
3. Hostile, esp on party lines in politics
4. Involving opposing parties or interests (law)

• dun-bird
• dun-birds
• dunce
• duncedom
• duncedoms
• dunceries
• duncery
• dunces
• dunce's cap
• dunce's caps
• dunch
• dunched
• dunches
• dunching
• Dunciad
• dun-cow
• dun-cows
• Dundee cake
• dunder
• dunderfunk
• dunderfunks
• dunderhead
• dunderheaded
• dunderheadedness
• dunderheadism