• porfyrophobia,
• porphyriphobia,
• porphirophobia,
• porhyrophobia,
• porphyrofobia,
• porphyrophobea,
• porphyrophobya

• porch,
• pore,
• pore over,
• portly,
• pour,
• portrait,
• porpoise,
• porcupine,
• poorly,
• porcelain,
• porridge,
• portfolio,
• Porsche,
• porphyrin,
• porous.

The adjective form of "porphyrophobia" is "porphyrophobic".

The plural form of "porphyrophobia" is "porphyrophobias".

The singular form of the word "porphyrophobia" is "porphyrophobia". The word does not change in its singular form.