The Capital Sins can be classified according to the virtues they oppose.  They are called “capital” because they engender other sins, other vices.

Capital Sins:Virtues Opposed:
Pride -->Humility
Covetousness -->Liberality
Lust -->Chastity
Anger -->Meekness
Gluttony -->Temperance
Envy -->Brotherly love
Sloth -->Diligence