/ ˌmɪsˈtaɪm; NAmE / verb
[ vn ] to do sth at the wrong time, especially when this makes sth bad or unpleasant happen :
The horse completely mistimed the jump and threw its rider.
► mis·tim·ing noun [ U ]:
The failure of the talks was mainly due to insensitivity and mistiming.
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WORD ORIGIN
Old English mistīmian happen unfortunately (see mis- , time ).