Investigate
Investigate , transitive verb
[Latin investigatus, past participle of investigare to investigate; pref. in- in + vestigare to track, trace. See Vestige.]
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.
Investigate , intransitive verb
To pursue a course of investigation and study; to make investigation.