| feeler(noun, experiment) |
| first line(expression, idiom, front) |
| fish out(verb, expression, examine, case, discover) |
| follow(verb, cover, catch, discover, pursue) |
| frisk(verb, study, check, consider, examine) |
| front rank(expression, idiom, front) |
| gaze(verb, study, consider, see, observe) |
| gird(verb, drop, reject, scorn, ridicule) |
| go after(verb, expression, cover, do, follow) |
| go before(verb, expression, lead, head, anticipate) |
| go in advance(expression, idiom, lead, head, anticipate) |
| go into(expression, study, check, consider, examine) |
| go over(verb, expression, study, check, observe) |
| guard(noun, person, watch, spy, attendant) |
| guidebook |
| gun for(verb, expression, check, follow, examine) |
| have a head start(expression, idiom, lead, head, anticipate) |
| head up(verb, expression, lead, head, anticipate) |
| hold in derision(expression, idiom, disrespect) |
| hound(verb, harass, pursue, chase, persecute) |