unpoised

She looked confused and unpoised for the first time I can ever remember.

The electrode is called to be unpoised in such case.

In the moment-to-moment husbandry of detail by which a conductor's experience is to be conveyed, Mr. Barenboim sometimes disappoints; he does not exactly watch over balances with a hawk's eye, and sometimes he can arrive at energetic passages in a way that encourages rough, unpoised playing.