Synonyms of investigation

investigation

noun

as in inquiry

a systematic search for the truth or facts about something

officials launched an extensive investigation of the plane crash

Synonyms & Similar Words

• inquiry
• examination
• exploration
• study
• probe
• probing
• research
• inspection
• inquisition
• inquest
• probation
• delving
• survey
• disquisition
• questionnaire
• audit
• quest
• interrogation
• diagnosis
• examen
• hearing
• trial
• question
• reinvestigation
• checkup
• poll
• query
• challenge
• cross-examination
• rehearing
• check
• grilling
• soul-searching
• questionary
• quiz
• feeler
• self-examination
• self-reflection
• self-scrutiny
• going-over
• self-exploration
• self-questioning

Example Sentences

Recent Examples of investigation

An investigation by the Texas State Board of Dental Examiners found that while the three medications were administered in non-fatal doses, Hemphill failed to acknowledge the way the drugs would act when combined, according to the warrant. — Lillie Davidson, Fort Worth Star-Telegram, 16 July 2026

News reporting about the new plane’s security deficiencies angered the president and triggered a sprawling leak investigation. — Brian Stelter, CNN Money, 16 July 2026

Ruemmler is the 17th person to testify as part of their broader investigation. — ABC News, 15 July 2026

The lawmakers’ request — a moment of bipartisan scrutiny on a controversial federal health care program — comes just one month after a government investigation unearthed a continuing pattern of denials within Medicare Advantage. — Casey Ross, STAT, 15 July 2026

But the integrity of the meteorites was still incredibly well-preserved for scientific investigation. — Chelsea Gohd, Space.com, 15 July 2026

Wake County District Attorney Lorrin Freeman has launched a criminal investigation into Greater Carolina and its bourbon tours. — Charlotte Observer, 15 July 2026

In contentious questioning, Booker pressed Blanche on whether career attorneys at the DOJ’s Antitrust Division recommend closing the investigation into the merger. — Ted Johnson, Deadline, 15 July 2026

His rare visit comes as an investigative judge continues to re-examine the investigation into the assassination of President Jovenel Moïse, who was killed on July 7, 2021. — Jacqueline Charles, Miami Herald, 15 July 2026