Translation

慢性の / 長期的な / 常習的な

Meaning

Chronic describes an illness, pain, problem, or condition that lasts a long time or keeps returning. It does not simply mean severe; a chronic problem can be mild but persistent. The medical contrast is acute.

Examples

• 彼は何年も慢性的な腰痛に悩まされています。
  He has suffered from chronic back pain for years.
• その町は慢性的な水不足に直面しています。
  The town faces a chronic shortage of water.