- Good x bad
- Big x small
- Entrance x exit
- This x that
- Win x lose
- Arrive x depart
- Strong x week
- Elder x younger
- Above x below
- Always x never
- United x divided
- Fast x slow
- Possible x impossible
- Full x empty
- Serious x silly
- Justice x injustice
- Inside x outside
- Inhale x exhale
- Ancient x modern
- Public x private
- Just x unjust
- Agree x disagree
- Harmful x harmless
- Healthy x unhealthy
- Function x malfunction
- Apart x together
- Attack x defense
- Simple x complex
- Curricular x extra-curricular
- Certain x uncertain
