INVESTIGATING

investigation, investigating

(noun) the work of inquiring into something thoroughly and systematically

Source: WordNet® 3.1

Verb

investigating

present participle of investigate

Source: Wiktionary

INVESTIGATE

In*ves"ti*gate, v. t. [imp. & p. p. Investigated; p. pr. & vb. n. Investigating.] Etym: [L. investigatus, p. p. of investigare to investigate; pref. in- in + vestigare to track, trace. See Vestige.]

Definition: To follow up step by step by patient inquiry or observation; to trace or track mentally; to search into; to inquire and examine into with care and accuracy; to find out by careful inquisition; as, to investigate the causes of natural phenomena.

In*ves"ti*gate, v. i.

Definition: To pursue a course of investigation and study; to make investigation.

Source: Webster’s Unabridged Dictionary 1913 Edition