| spy(noun, verb, person, follow, plant) |
| sleuth(noun, verb, person, plant, examine) |
| intrude(verb, hinder, stir, impede, bug) |
| meddle(verb, examine, case, discover, stir) |
| busybody(noun, verb, person, hinder, stir) |
| nose(verb, phrasal verb, informal, look, search) |
| interfere(verb, advance, hinder, stir, impede) |
| poke(verb, look, watch, investigate, participate) |
| stag(verb, examine, case, discover, watch) |
| peek(verb, watch, bug, interfere, glance) |
| butt in(verb, expression, hinder, stir, impede) |
| nose around(verb, expression, phrasal verb, discover, watch) |
| peep(noun, verb, examine, discover, look) |
| scout(noun, verb, person, plant, examine) |
| shadow(noun, verb, examine, case, discover) |
| tail(noun, verb, examine, case, discover) |
| tamper(verb, advance, hinder, stir, impede) |
| case(verb, examine, discover, watch, scrutinize) |
| catch sight of(verb, expression, idiom, examine, case) |
| discover(verb, examine, watch, scrutinize) |