Other forms: fussing, fussed, fusses
A fuss is a lot of noise and worry about something small. The reaction is bigger than the cause.
It takes about or over, and making a fuss is what somebody does when the writer thinks they should not have. There is a warm version too, since fussing over somebody means caring for them attentively, and a grandparent fussing over a visitor is entirely welcome. Kicking up a fuss means complaining loudly. The adjective fussy means hard to please, especially about food.
Danish
fjas — nonsense
English, today
fuss
Of unknown origin. Perhaps from Danish fjas (“nonsense”), from Middle Low German - (compare German faseln (“to maunder, talk nonsense”)). Compare also fouse (“to hasten, rush, tumble, disarrange”).
Etymology from Wiktionary, CC BY-SA