IPA: /ɪnˈdeɪɡeɪt/
KK: /ɪnˈdeɪɡeɪt/
To seek or search for something.
The detective will indagate the crime scene for clues.
Past: indagated
Past Participle: indagated
Indagate is formed from "in-" (meaning into) and "dagare" (from Latin "dagare", meaning to investigate or search). The word means to search into or investigate thoroughly.
Think of 'searching into' something — 'in-' means into, and 'dagare' relates to investigating.