For the crossword clue "pact or agreement," common answers include:

• DEAL (4 letters)
• ACCORD (6 letters)
• ASSENT (6 letters)
• LEAGUE (6 letters)
• PLEDGE (6 letters)
• TREATY (6 letters)
• ALLIANCE (8 letters)
• AGREEMENT (9 letters)

These are some synonyms often used in crossword puzzles for "pact" or "agreement".