How to say "morbid" in Japanese

• 不健全ふけんぜんCommon
  na-adjective, nounCovers 'morbid' as unwholesome or unhealthful: something detrimental to physical or mental health, such as an insalubrious climate or an unhealthy interest. It presents the matter as lacking health rather than as diseased.
  リーダーたちの不和ふわが不健全ふけんぜんなセクショナリズムをもたらした。↗

  The conflicts among leaders resulted in unhealthy sectionalism.
• 病的びょうてきCommon
  na-adjective, no-adjectiveCovers 'morbid' as pathological: an abnormality with the quality of disease, whether of body or mind, as in a morbid obsession or fear. It frames the condition as sickness-like rather than merely unwholesome.

Both cover 'morbid' in the sense of unwholesome or unhealthy; 不健全 also means insalubrious, while 病的 is the closer match for 'pathological', stressing resemblance to actual disease.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 不健全ふけんぜんmorbid
• 病的びょうてきpathological