Best Oxymorons

Act naturally
Advanced BASIC
Airline Food
Alone together
American history
British fashion
Business ethics
Butt head
Clearly misunderstood
Computer security
Definite maybe
Diet ice cream
Exact estimate
Extinct Life
Found missing
Genuine imitation
Good grief
Government organization
Legally drunk
Living dead
Microsoft Works
Military intelligence
New classic
Passive aggression
Peace force
Plastic glasses
Political science
Pretty ugly
Resident alien
Same difference
Sanitary landfill
Silent scream
Small crowd
Soft rock
Sweet sorrow
Synthetic natural gas
Taped live
Temporary tax increase
Terribly pleased
Tight slacks
Twelve-ounce pound cake
Working vacation