1. A Latin prefix, signifying backward.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• restr,
• cetre,
• reture,
• retrea,
• reto,
• retarn,
• pretry,
• returm,
• reatry,
• predro,
• pietro,
• retn,
• retrun,
• netry,
• reton,
• returd,
• cetra,
• retern,
• retur,
• detroy

• retry,
• reuter,
• reder,
• reeder,
• reader,
• reider,
• reuther,
• retter,
• reiter,
• rehder.

The adjective form of the word "retro" is "retro".

The plural of the "retro" can be the "retros".

The singular of the "retro" can be the "retro".