investigation
1. [ noun ] an inquiry into unfamiliar or questionable activities
Synonyms: probing probe
Examples:

"there was a congressional probe into the scandal"

Related terms: inquiry investigate
2. [ noun ] the work of inquiring into something thoroughly and systematically
Synonyms: investigating
Related terms: work research analysis examination calibration search count inquiry examination surveillance detection wiretap tabulation due_diligence empiricism investigate investigate
Similar spelling:   investigating
  investigative
  investigate
  investigator
  investigatory
  infestation
  investment
  investors_club
  investiture