| heckle(verb, bother, annoy, harass, pursue) |
| hector(verb, bother, annoy, harass, pursue) |
| hound(verb, harass, pursue, chase, persecute) |
| hunt down(verb, expression, phrasal verb, bother, annoy) |
| hunt for(verb, expression, phrasal verb, check, examine) |
| impel(verb, bother, annoy, harass, pursue) |
| inquire into(verb, expression, phrasal verb, examine, try) |
| introvert |
| intussuscept |
| invaginate |
| inverse |
| investigate(verb, action, check, examine, look) |
| investigate discover(verb, expression, find, uncover, retrieve) |
| investigate survey(verb, expression, examine, try, discover) |
| jump into(verb, expression, phrasal verb, action, investigate) |
| look(verb, check, examine, seek, investigate) |
| look all over(expression, idiom) |
| look everywhere |
| look for(verb, expression, phrasal verb, beat, check) |
| look into(verb, expression, phrasal verb, action, examine) |