n.
Function: noun
Etymology: Middle English, from Old English fitt strife
Date: circa 1541
1 a : a sudden violent attack of a disease (as epilepsy) especially when marked by convulsions or unconsciousness : PAROXYSM b : a sudden but transient attack of a physical disturbance
2 : a sudden burst or flurry (as of activity) <cleaned the whole house in a fit of efficiency>
3 : an emotional reaction (as in anger or frustration) <has a fit when I show up late>
– by fits or by fits and starts or in fits and starts : in an impulsive and irregular manner <construction proceeded by fits and starts >