Oxymorons

Act naturally

Found missing

Resident alien

Advanced BASIC

Genuine imitation

Legally drunk

Silent scream

Living dead

Small crowd

Business ethics

Soft rock

Software documentation

New classic

Same difference

Almost exactly

Sanitary landfill

Sweet sorrow

"Childproof"

Now, then ...

Synthetic natural gas

Passive aggression

Taped live

Clearly misunderstood

Peace force

Extinct Life

Temporary tax increase

Terribly pleased

Tight slacks

Definite maybe

Pretty ugly

Twelve-ounce pound cake

Diet ice cream

Working vacation

Exact estimate