Doddering is a word used to describe an elderly person who trembles. A good sentence would be, the woman was doddering after she tried to get up out of the chair.

um mental person and clumsy

venerable, doddering, senescent, ancestral

The man next door wasn't very stable on his feet, he was a doddering old man

The preceding is a run-on sentence (comma splice). You need a semi-colon or a period between "feet" and "he."

Dodge, Dodo, dodad, dodder, doddering, dodec, dodecagon, dodecanoic, dodass...