unkept
/ˌʌnˈkept/adjective
1
- (of a commitment or undertaking) not honoured or fulfilled（承诺）未履行的; （任务）未完成的：
unkept appointments and broken promises.
未守的信约和违背的诺言。
2
- not tidy or cared for不整洁的; 未照看好的。