unanticipated

US /ˌʌn.ænˈtɪs.ə.peɪ.t̬ɪd/
UK /ˌʌn.ænˈtɪs.ə.peɪ.t̬ɪd/
1.

không lường trước được

not having been expected to happen:

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This was yet another unanticipated event that upset the administration's plans and expectations.