苦；苦しみ；不満足性（四聖諦の第一）

suffering; unsatisfactoriness; dukkha (the first noble truth)

苦痛；苦受（身体的・精神的）；不快

pain; painful feeling (bodily or mental); discomfort

（形容詞として）苦しい；不快な；耐え難い

(as adjective) painful; unpleasant; hard to bear