• diabloceratops,
• diableoceratops,
• diabloceratopps,
• diabloceratop,
• diableceratops,
• deabloceratops,
• diabloceratobs

• biopsy,
• prosthetic,
• ceratops,
• archaeopteryx,
• bioluminescence,
• robotics,
• ceramics,
• prostate,
• robust,
• astrophysics,
• biodegradable,
• topaz,
• diabetic,
• prosthesis,
• diabolical,
• microbiology,
• diaphragm,
• thermodynamics,
• Diablo,
• ceremonial.

The adjective form of the word "diabloceratops" is "diabloceratopsian".

The plural form of the word "diabloceratops" is "diabloceratops".

The singular form of the word "diabloceratops" is "diabloceratops". The word itself is already singular, referring to a specific type of dinosaur.