1. Quintennial
2. Pentaeteric
3. Quinquennial
4. Period of five years
5. Quintuple
6. Pentalogy
7. Five-cycle
8. Five-phase
9. Five-season
10. Five-span
11. Five-stint
12. Five-term
13. Fivefold
14. Pentad
15. Pentamerous
16. Pentarchy
17. Pentavalent
18. Pentecontad
19. Pentecontaeteris
20. Pentecost
21. Pentelic
22. Pentennial
23. Pentomic
24. Quint
25. Quinquefid
26. Quinquefoliate
27. Quinqueliteral
28. Quinquennium
29. Quinquepartite
30. Quinquesyllabic

When looking for the best ideas for synonyms for the word «FIVEYEAR», there are many options to choose from. Whether you are looking for a word that is similar in meaning, or one that is more technical in nature, there are many synonyms available. For example, some of the more common synonyms for «FIVEYEAR» include «quintennial», «pentaeteric», and «quinquennial». Other words that can be used to describe the concept of five years include «period of five years», «quintuple», and «pentalogy». Additionally, there are many more technical terms that can be used such as «five-cycle», «five-phase», and «five-season». No matter what type of word you are looking for, there are many other words for «FIVEYEAR» available to choose from.