unpoised
/(ˌ)ʌnˈpɔɪzd/adjective
1Not poised; unbalanced, not held in equilibrium. Also in later use: not (or no longer) held in readiness or expectation.
2Of a person, his or her behaviour, etc.: lacking composure or self-assurance; unsettled, impetuous.
Origin
Early 17th century; earliest use found in William Fowler (d. 1612), writer and courtier. From un- + poised.