tottering

adjectives

unsteady in gait as from infirmity or old age
"a tottering skeleton of a horse"; "a tottery old man"
tottering, tottery
(of structures or institutions) having lost stability; failing or on the point of collapse
"a tottering empire"
tottering
is similar to
lacking stability or fixity or firmness
"unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy"
unstable