The definition of investigate is to look into something or someone in order to try to discover the truth or to piece together a sequence of events.
To do research; make researches
To investigate by means of a chemical probe.
To test or check the condition or health of:
examine physically with or as if with a probe
Find another word for dig-into. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for dig-into, like: investigate, research, probe, delve into, examine and poke into.