1. Motive
2. Reason
3. Rationale
4. Explanation
5. Justification
6. Intention
7. Grounds
8. Inquiry
9. Queries
10. Quest
11. Pursuit
12. Questing
13. Quizzing
14. Querying
15. Asking
16. Investigating
17. Querying
18. Quizzing
19. Investigating
20. Interrogating
21. Querying
22. Probing
23. Querying
24. Querulous
25. Querying
26. Speculating
27. Querying
28. Querying
29. Querulous
30. Querying
When searching for other words for the word “why”, the best ideas are to look for synonyms that imply a question or inquiry. “Motive”, “reason”, and “rationale” are all good words to start with, as they imply a cause or purpose. Other words such as “explanation”, “justification”, and “intention” can also be used to describe the same concept. Additionally, words such as “grounds”, “inquiry”, “queries”, “quest”, and “questing” can be used to describe the same concept. For more specific words, words such as “quizzing”, “querying”, “asking”, “investigating”, “interrogating”, “probing”, “querulous”, and “speculating” can all be used to describe the same concept. Ultimately, when looking for other words for the word “why”, the best ideas are to look for synonyms that imply a question or inquiry.