• oriapism,
• lriapism,
• -riapism,
• 0riapism,
• peiapism,
• pdiapism,
• pfiapism,
• ptiapism,
• p5iapism,
• p4iapism,
• pruapism,
• prjapism,
• prkapism,
• priappism,
• priepism,
• priopism,
• priaposim,
• preepism,
• preapism,
• preipism

• priapic,
• priapus,
• periapsis.

The adjective form of the word "priapism" is "priapic".

The plural form of the word "priapism" is "priapisms"

The singular form of the word "priapism" is "priapism". This is because "priapism" is already a singular noun referring to a persistent and often painful erection of the penis, which does not have a separate singular form.