Seleucus I Nicator was a Greek general and one of the Diadochi, or successors, of Alexander the Great. He founded the Seleucid Empire and ruled from 312 BC until his death in 281 BC. The name Seleucus is derived from the Greek word "seleucos," which means "to shepherd or guide." Nicator is also a Greek word, which means "the conqueror." Some synonyms for Seleucus I Nicator might include Seleucus the Victorious, Seleucus the Conqueror, or Seleucus the Shepherd. These synonyms reflect his military conquests and leadership abilities, as well as his name origin.