a quoi bon? /a kwa bɔ̃ˈ/ (French) what's the good of it?

• rigidities
• rigidity
• rigidize
• rigidized
• rigidizes
• rigidizing
• rigidly
• rigidness
• rigidnesses
• rigids
• Rigil
• self-powered
• self-praise
• self-preparation
• self-preparations
• self-prepared
• self-preservation
• self-preservative
• self-preserving
• self-pride
• self-proclaimed
• self-produced
• self-professed
• self-profit
• self-profits