Wordне ... лиMeaningwhetherPart of speechparticlePronunciationCourseHardcore RussianLessonLesson 92Usages of не ... лиДежурная проверила, не остался ли кто‑нибудь в кабинете, и только потом вышла на лестницу.The duty staff woman checked whether anyone had remained in the office, and only then went out to the staircase.