Oxymoron

A list of oxymoron

Act naturally
Found missing
Resident alien
Advanced basic
Genuine imitation
Good grief
Same difference
Almost exactly
Alone together
Silent scream
Living dead
Small crowd
Soft rock
Butt head
New classic
Sweet sorrow
"Now, then ..."
Synthetic natural gas
Passive aggression
Taped live
Clearly misunderstood
Peace force
Extinct Life
Plastic glasses
Terribly pleased
Political science
Tight slacks
Definite maybe
Pretty ugly
Twelve-ounce pound cake
Working vacation
Exact estimate
Intellectual fool