Слово "tottering". Англо-русский словарь Мюллера

Not mentally tottering, I think a human mind that’s moderately well-adjusted can absorb a lot of strangeness before it actually totters, but freaked, yes.

"And really, I do not think the impression will soon be over," said Emma, as she crossed the low hedge, and tottering footstep which ended the narrow, slippery path through the cottage garden, and brought them into the lane again.

And then my mind made its first earnest effort to comprehend what had been infused into it concerning heaven and hell; and for the first time it recoiled, baffled; and for the first time glancing behind, on each side, and before it, it saw all round an unfathomed gulf: it felt the one point where it stood—the present; all the rest was formless cloud and vacant depth; and it shuddered at the thought of tottering, and plunging amid that chaos.

It was the Kennebec Fruit Company, which was certainly a grandiose name for a store that had been tottering on the edge of oblivion — or so it seemed to me — for the ten years I’d been teaching at LHS.

All his values were tottering under the breeze of Asya's words; they seemed exaggerated, cardboard even.

As for Dorothea, nothing could have pleased her more, unless it had been a miraculous voice pronouncing Mr. Casaubon the wisest and worthiest among the sons of men. In that case her tottering faith would have become firm again.