UNSCHEDULED
Meaning of UNSCHEDULED in English
/ ʌnˈʃedjuːld; NAmE ʌnˈskedʒuːld/ adjective
that was not planned in advance
SYN unplanned :
an unscheduled stop
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005