• Maintain (its) fizziness
• Maintain (one's) belief
• Maintain (one's) composure
• Maintain (one's) dignity
• Maintain (one's) self-control
• Maintain (one's) supremeness
• Maintain (someone's) calmness
• Maintain (someone's) dreadlocks
• Maintain (someone's) exteriority
• Maintain (someone's) fettle