What word or phrase does your mother always say?
in Buddhism, the first of the Four Noble Truths, that life is constantly changing and therefore full of suffering, specif. due to attachment and excessive desire; an understanding that the nature of life is suffering and impermanence; also written duhkha , dukkhata
The other three Noble Truths explain the origins of dukkha and the means for eliminating dukkha.
Sanskrit, Pali translated variously, including'truth, the truth of suffering'