dither

名词 dither:

1. an excited state of agitation
   同义词：pother, fuss, tizzy, flap

动词 dither:

1. act nervously; be undecided; be uncertain
2. make a fuss; be agitated
   同义词：flap, pother

1. Stop dithering about which film you want to see or you'll miss them both!
   到底看哪一部影片，别再犹豫了，不然的话，两部影片你都要耽误了！

dith.er

n.（名词）
A state of indecisive agitation.
慌乱，紧张；兴奋：优柔寡断的焦虑状态
v.intr.（不及物动词）
dith.ered,dith.er.ing,dith.ers
To be nervously irresolute in acting or doing.
不知所措：在表演或做事时处于紧张犹豫中

来源：
Alteration of didder
didder的变化
from Middle English didderen [to tremble]
源自 中古英语 didderen [战栗，颤动，发抖]