| distress |
| drive |
| effort |
| efforts |
| exert(worry, fret, labor, toil, panic) |
| give(verb, study, direct, use, operate) |
| give best shot(expression, idiom, study, give, direct) |
| give old college try(expression, idiom, study, give, direct) |
| grind(verb, study, give, work, direct) |
| hammer away(verb, expression, study, give, direct) |
| hit the ball(expression, idiom, study, give, direct) |
| knuckle down(verb, expression, study, give, work) |
| labor(work, worry, try, concentrate, fret) |
| lose sleep over(expression, idiom, worry, fret, labor) |
| make an effort(verb, expression, fight, try, address) |
| make effort(verb, expression, study, give, direct) |
| overwork |
| peg away(verb, expression, study, give, work) |
| persevere(verb, study, give, direct, use) |
| plug(verb, study, give, work, direct) |