| dysfunction(noun, illness, unsoundness, indisposition, unhealthiness) |
| eruption(noun, flash, burst, outbreak, flare) |
| explosion(noun, flash, burst, outbreak, flare) |
| fever(noun, disorder, condition, complication, complaint) |
| fit(noun, disorder, condition, complication, complaint) |
| flare(noun, flash, burst, outbreak) |
| flare-up(noun, flash, burst, outbreak, flare) |
| flash(noun, burst, outbreak, flare) |
| flicker(noun, flash, burst, outbreak, flare) |
| flood(noun, flash, burst, outbreak, flare) |
| flurry(noun, flash, burst, outbreak, flare) |
| flutter(noun, flash, burst, outbreak, flare) |
| furor(noun, flash, burst, outbreak, flare) |
| hypochondria(noun, illness, unsoundness, indisposition, unhealthiness) |
| ill(noun, disorder, condition, complication, complaint) |
| increase(noun, flash, burst, outbreak, flare) |
| indisposition(noun, illness, unsoundness, unhealthiness) |
| infection(noun, disorder, condition, complication, complaint) |
| invalidism(noun, illness, unsoundness, indisposition, unhealthiness) |
| invalidity(noun, illness, unsoundness, indisposition, unhealthiness) |