research (n.)
- analysis
- assay
- burrow
- detection
- dig
- digging
- enquiry
- essay
- examination
- experiment
- experimentation
- exploration
- forage
- frisk
- hearing
- hunt
- inquest
- inquiry
- inquisition
- inspection
- investigation
- poke
- probe
- pry
- quest
- root
- sample
- scrutiny
- search
- sifting
- sleuthing
- study
- taste
- test
- try
- witch-hunt