suffering, trial, worry, hardship, feel bitter, scowl

Radicals

• 苦労【くろう】
  trouble, hardship, difficulty, labour, labor, toil, pains, anxiety, worry, concern, cares
• 苦しむ【くるしむ】
  to suffer, to groan, to be worried
• 苦手【にがて】
  poor (at), weak (in), not very good (at), not one's cup of tea, not one's favorite
• 苦しい【くるしい】
  painful, difficult, tough, hard, distressing, (psychologically) difficult, stressful, awkward (e.g. position), straitened (circumstances), tight (financial situation), needy, struggling, strained (interpretation, explanation, etc.), lame (e.g. excuse), forced (e.g. smile), far-fetched, hard to do, unpleasant
• 苦痛【くつう】
  pain, agony, suffering, distress, torment