1. Notice
2. Directive
3. Circular
4. Reminder
5. Communication
6. Instruction
7. Bulletin
8. Letter
9. Alert
10. Message
11. Memorandum
12. Word
13. Word of mouth
14. Advice
15. Edict
16. Pronouncement
17. Order
18. Notice board
19. Advisory
20. Gazette
21. Caution
22. Warning
23. Posting
24. Directive
25. Notation
26. Word of caution
27. Cautionary tale
28. Advisory note
29. Cautionary message
30. Cautionary reminder

When you need to communicate with a group of people, a memo is often the best way to go. It is an efficient way to get an important message out to a large group quickly. Synonyms for memo can include notice, directive, circular, reminder, communication, instruction, bulletin, letter, alert, message, memorandum, word, word of mouth, advice, edict, pronouncement, order, notice board, advisory, gazette, caution, warning, posting, directive, notation, word of caution, cautionary tale, advisory note, cautionary message, and cautionary reminder. Each of these words can be used to describe an important message that needs to be shared with a large group of people.

When you are looking for ideas for other words for memo, there are plenty of options to choose from. Whether you are looking for a more formal word or something more casual, you can find a synonym that suits your needs. From notice to cautionary reminder, there are a variety of words to choose from that can help you communicate your message in the most effective way possible.