{"era":"current","word":"investigative","meaning":"relating to careful examination of facts or circumstances","children":[{"era":"1500s","word":"investigate","meaning":"search into carefully","children":[{"era":"classical","word":"Latin investigare","meaning":"to track down, trace out","children":[{"era":"classical","word":"in-","meaning":"into, upon","children":[],"language":"Latin"},{"era":"classical","word":"vestigium","meaning":"footprint, track","children":[],"language":"Latin"}],"language":"Latin"}],"language":"Modern English"},{"era":"medieval","word":"-ive","meaning":"forming adjectives","children":[],"language":"Latin/French suffix"}],"language":"Modern English"}