Possible Clues:

• Abbreviation indicating that a named person is part of a group
• Delayed returning: also others
• Greek character joins learner and other people
• Greek character joins learner and others
• Left after expected time with others
• Up past midnight with all the others
• Departed, heading north with others
• Late up, along with others
• Turned up after hours with others
• And others (abbrev.)