From King Dictionary of Contemporary Englishditherdith‧er /ˈdɪðə $ -ər/ verb [intransitive] DECIDEto keep being unable to make a final decision about somethingdither over/about/between He accused the government of dithering over the deal. Stop dithering, girl, and get on with it!ditherer noun [countable]→ See Verb table
Examples from the Corpus
ditherFor many proponents of a flat tax, this is mere dithering.No weakness was tolerated, no dithering allowed.If dithering and indecision are a problem for you, this is not your magazine.Stop dithering and make up your mind.For those still tempted to dither, consider this.Marcia was still upstairs, dithering over what she should pack.There is an inevitable escapade in Paris, followed by dithering, separation and reunion.My legs dithered weakly and I was breathless.Why was she dithering when she ought to be doing?dither over/about/betweenAnd he was remembered too for his commitment to standing up to Slobodan Milosevic in Kosovo after the dithering over Bosnia.Or listening for days on end while she dithered about her appalling marriage: we'd be bored.As I was dithering between neglected work and abandoned clearing up, she rang me.A car smashed into her rear end as she dithered over which direction to take.
Origin dither (1600-1700) didder to shake ((14-19 centuries))