chronic · adjective /ˈkrɑn.ɪk/Full view
C2 A chronic illness or problem continues for a long time.
Dictionary examples:

a chronic shortage of nurses

chronic back pain

Learner example:

The daily and nightly disturbance of our lives causes chronic fatigue and high levels of irritation among the people, thus creating a most unwanted situation which should be ended as soon as possible. (Certificate of Proficiency in English; C2; Dutch)

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