different between staggering vs doddery

English

staggering

staggering (comparative more staggering, superlative most staggering)

staggering (plural staggerings)

The motion of one who staggers.
- 1837, Memoirs of Mirabeau (in The Westminster Review, volume 26, page 436)
  There are to whom the gods, in their bounty, give glory: but far oftener it is given in wrath, as a curse and a poison; disturbing the whole inner health and industry of the man; leading onward through dizzy staggerings and tarantula jiggings […]
That which staggers something or somebody.
- 1738, Ebenezer Erskine, The Annals of Redeeming Love
  But these doubts, and fears, and staggerings, although they may be in the believer, yet they are not in his faith; these things argue the infirmity of his faith, indeed; but under all this, faith is fighting for the victory […]
In animation, the repetition of a sequence of frames to show struggling effort

dodder +? -y

doddery (comparative more doddery, superlative most doddery)

Doddering, trembly, shaky.
- 1994, Laurie R King, The Beekeeper's Apprentice
  That is not to say that he became a doddery old man — far from it. He was just a bit thoughtful at times, and I would catch him looking at me pensively...
- 1999, Terence Rattigan, Benoît Delhomme, David Mamet, The Winslow Boy
  The old boy's so doddery now he can hardly finish the course at all. I timed him today. It took him seventy-five seconds...

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