dither
1. [ verb ] shake, as from cold
Synonyms: shudder shiver
Examples:

"The children are shivering--turn on the heat!"

Related terms: fret move_involuntarily tremor
2. [ verb ] make a fuss; be agitated
Synonyms: pother flap
Related terms: fuss
3. [ verb ] act nervously; be undecided; be uncertain
Related terms: fret
4. [ noun ] an excited state of agitation
Synonyms: fuss flap tizzy pother
Examples:

"he was in a dither" "there was a terrible flap about the theft"

Related terms: agitation
Similar spelling:   Dieter
  Didier
  didder
  dietary