Forum Moderators: open
Promote vs Demote
Progress vs Degress
Pronounce vs Denounce
... although not to be confused with:
Protect vs Detect
Protest vs Detest
:)
In other instances the opposites are "in" and "de" instead:
Inflate vs Deflate
Infuse vs Defuse
... although not to be confused with:
Instruct vs Destruct