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

Multiple agencies from surrounding cities helped with the investigation. — Angel Saunders, PEOPLE, 3 Sep. 2026

According to a report from LASD released Tuesday, no arrests were made during the search and seizure and the investigation into the Arcadia business is ongoing. — Kate Nishimura, Footwear News, 2 Sep. 2026

Tim Marple, who worked on OpenAI's investigations team in 2024, said incidents like Tumbler Ridge expose the risks of letting AI companies self-regulate, rather than requiring them to report violent threats on their platforms. — Shannon Bond, NPR, 2 Sep. 2026

An investigation confirmed the incident did not cause any environmental contamination, officials said. — Mark Price, Charlotte Observer, 2 Sep. 2026

There is no known ongoing threat to the community, but patrols have been increased around LGBTQIA+ establishments as the investigation continues, according to police. — Thao Nguyen, USA Today, 2 Sep. 2026

As part of the investigation into Cherfilus-McCormick that led to her resignation, the committee released a report naming Joseph as the go-between between the ex-representative and a politically connected oil company, Petrogaz Haiti. — Alex Harris, Miami Herald, 2 Sep. 2026

But subsequent investigation found that 60% to 80% of the grove’s trees were scorched, according to a report released Tuesday from the fire’s Burned Area Emergency Response team. — Corinne Purtill, Los Angeles Times, 2 Sep. 2026

Yust, of Kansas City, had been linked to the women early in the investigations, but their cases remained unsolved. — Kansas City Star, 2 Sep. 2026