0 past simple and past participle of fuss
1 to give too much attention to small matters that are not important, usually in a way that shows that you are worried and not relaxed:
Child negative mood assessed the extent to which the child cried, fussed, frowned, tensed body, or otherwise expressed his or her discontentment during the interaction.
It is a fact that people in foreign countries get fussed up with ideas.
What is more, people have always become terribly fussed and worried about lorries.
Nobody is that fussed about which countries they come from.
The person dialling is already fussed, because he cannot dial.
I do not see why we should get fussed about that.
I am very fussed about that because it will make a huge difference.
The most interesting aspect of the whole affair to me was that hardly anyone seemed very fussed about it.