• wxtropy,
• sxtropy,
• dxtropy,
• rxtropy,
• 4xtropy,
• 3xtropy,
• eztropy,
• exrropy,
• exfropy,
• exgropy,
• exyropy,
• ex6ropy,
• exteropy,
• extrop-y,
• extropi,
• Extropie,
• Extropay,
• Exterapy,
• Extoropy,
• Extropyse

• exotropia,
• exoteric,
• extra,
• extrovert,
• extropic,
• ectropy.

The adjective form of the word "extropy" is "extropic".

The plural form of "extropy" is "extropies".

The singular form of the word "extropy" is "extropy". The term "extropy" does not change in the singular form.