• spiroenone,
• spironeone,
• spioroenone,
• spironone

• expiration,
• perspiration,
• persuasion,
• cooperation,
• respiration,
• spermatogenesis,
• spirochete,
• spironolactone,
• inspiration,
• aspirin,
• separation,
• Spirometry,
• Spirulina,
• desperation,
• preparation.

The adjective form of the word "spirorenone" would simply be "spirorenone". Adjectives in English do not typically have a distinct form from their base noun.

The plural form of the word "spirorenone" is "spirorenones".

The singular form of the word "spirorenone" is "spirorenone".