Noun
suffect (plural suffects)
An additional Roman consul elected during the official year, especially in order to replace a retiring one
He was a senator under Commodus and governor of Smyrna after the death of Septimius Severus ; and afterwards suffect consul around 205, and also proconsul in Africa and Pannonia. Source: Internet
The climax came in the year 190, which had 25 suffect consuls – a record in the 1000-year history of the Roman consulship—all appointed by Cleander (they included the future Emperor Septimius Severus ). Source: Internet
Hadrian failed to achieve the honour of a regular consulate before his own reign, being only suffect consul for 108. Anthony R Birley, Hadrian: The Restless Emperor. Source: Internet