| fear(noun, verb, bother, worry, concern) |
| strive(verb, work, drive, determine, push) |
| drudge(noun, verb, performance, work, drive) |
| effort(noun, performance, work, energy, strain) |
| secrete(verb, give, show, discharge, display) |
| slave(verb, work, drive, strain, manage) |
| slog(noun, verb, work, drive, strain) |
| strain(noun, verb, work, drive, determine) |
| sudor(noun, fluid, perspiration, perspiring) |
| diaphoresis(noun, fluid, perspiration, excretion, perspiring) |
| dither(noun, state, agitation, shake, wave) |
| fag(noun, verb, work, exertion, exert) |
| fume(noun, excitement, agitation, heat, nervousness) |
| pother(noun, state, excitement, agitation, shake) |
| seethe(noun, excitement, agitation, heat, nervousness) |
| agonize(verb, worry, bear, fret, panic) |
| flap(noun, state, trouble, worry, concern) |
| flutter(noun, excitement, agitation, fear, shake) |
| fuss(noun, state, trouble, worry, concern) |
| glow(verb, heat, wilt, exude, swelter) |