Reverse Dictionary: INVESTIGATE

ADJECTIVES
► INDAGACIOUS given to search or investigation; eager to investigate → 1653 obs.

NOUNS
► APPOSAL a searching question; inquiry, investigation, esp. legal examination of accounts → LME obs.
► ARGUFICATION investigation → Bk1898 Eng. dial.
► EYEBALLING scrutiny, investigation; visual inspection or assessment; estimation or measurement by sight alone → 1959
► PERSCRUTATION a thorough searching or investigation; careful scrutiny, examination → 1603
► STICKYBEAK a furtive or prying look or investigation; an act of looking around → 1928 Aust. & NZ colloq.
► THROUGH-GANG ► THROUGH-GOING a thorough investigation or overhaul → 1897 Sc.
► UP-AND-DOWN, THE an official investigation → 1910s sl.

​NOUNS – PERSON
► HAWKER a private investigator → 1929 criminals’ sl.
► HEAVY a detective or investigator → 1967 Aust. sl.
► MOUCHARD an undercover agent or investigator, a police spy → 1802 esp. in France or  French-speaking regions
► PERSCRUTATOR a person who investigates thoroughly → 1656 obs.
► SNOOPER an investigator → 1889 US sl.
► ZETETIC an investigator, an inquirer; an adherent of the ancient Greek sceptic school of philosophy → 1658

PHRASES
► WORTH A PULL worth investigating → 19C sl.

VERBS
► AUGER ► AUGER AROUND to look or investigate surreptitiously → 1923 Amer. dial.
► BACK-TRACE to investigate past events → 1721 Eng. dial. obs.
► BOLT ALL THE FLOUR to investigate a matter thoroughly → 1590 obs.
► EVESTIGATE to seek out, to search after, to investigate → 1656 obs.
► GUMSHOE to investigate, esp. used of police or private detectives → 20C sl.
► INQUISITE to inquire into; to investigate, examine; to make inquiry → 1674 obs.
► LOOK-SEE to investigate, to examine; to determine, to ascertain → 1862 colloq.
► PERPEND to ponder, to consider; to examine, to investigate → 1447 arch.
► PERSCRUTATE to make a careful or thorough investigation → 1900
► PERSCRUTE to scrutinize thoroughly; to make a thorough search or inquiry; to investigate → a1545 obs.
► PROSPECT to make preliminary examinations or investigations → Bk1942 Amer. sl.
► RAKE to make search or investigation; to poke into → 1637
► SALINGE to investigate, to inquire → 1887 Eng. dial.
► SCANCE to find out by investigation, to seek a sight of → 1804 Sc.
► SCRUTATE to search out, to investigate → 1882
► SCRUTINATE to scrutinize, to examine, to investigate → a1734 obs.
► SOUND to make inquiry or investigation → 1793
► UNDERGO to investigate, to occupy oneself with → c1250 obs.
► UNDERGROPE to search into, to investigate; to learn → a1412 obs.
► WALE THROUGH to hunt through, to investigate → 1887 Sc.