1. Inquiry
2. Exploration
3. Examination
4. Analysis
5. Study
6. Delve
7. Research
8. Probe
9. Scrutiny
10. Deliberation
11. Audit
12. Test
13. Check
14. Evaluation
15. Quiz
16. Observation
17. Survey
18. Scrutinize
19. Scour
20. Dissection
21. Analysis
22. Scrutinise
23. Assay
24. Perusal
25. Inquiry
26. Analysis
27. Inspection
28. Analysis
29. Deliberation
30. Assay

When looking for ideas or solutions to a problem, it is often beneficial to conduct an investigation. An investigation is a thorough search for answers or evidence. Synonyms for the word investigation include inquiry, exploration, examination, analysis, study, delve, research, probe, scrutiny, deliberation, audit, test, check, evaluation, quiz, observation, survey, scrutinize, scour, dissection, analysis, scrutinise, assay, perusal, inquiry, analysis, inspection, analysis, and deliberation.

Finding the best ideas for an investigation can be a daunting task. However, there are several ways to find the best ideas for an investigation. First, it is important to consider the type of investigation that needs to be conducted. For example, if the investigation is related to a crime, then it may be best to consult a professional investigator. Additionally, conducting research through online sources can provide a wealth of information and ideas to consider. Finally, brainstorming with colleagues or friends can provide additional ideas that may not have been considered. By taking the time to research, consult, and brainstorm, the best ideas for an investigation can be found.