| drop on |
| elicit(verb, determine, see, catch, observe) |
| establish(verb, strike, reveal, spot, discover) |
| expose(verb, meet, catch, strike, notice) |
| fall across |
| fall among |
| fall foul of(expression, idiom) |
| fall on |
| get wind of(verb, expression, idiom, phrasal verb, determine) |
| get wise to(verb, expression, idiom, phrasal verb, determine) |
| glimpse(verb, determine, see, catch, observe) |
| hear(verb, determine, see, catch, observe) |
| hit(verb, meet, light, discover, find) |
| hook(verb, establish, strike, reveal, spot) |
| invent(verb, determine, see, catch, observe) |
| lay fingers on(verb, expression, idiom, phrasal verb, meet) |
| learn(verb, determine, see, catch, observe) |
| look up(verb, expression, phrasal verb, determine, see) |
| make out(verb, expression, phrasal verb, meet, catch) |
| meet head-on |