How to say "unhealthy" in Japanese

• 病的びょうてきCommon
  na-adjective, no-adjectiveCovers the morbid, pathological sense of unhealthy: something that seems sick in itself, such as a morbid obsession or fixation, rather than a body simply in poor condition.
• 不健康ふけんこうCommon
  na-adjective, nounThe straightforward word for the literal sense: a person in poor health, or an unhealthy lifestyle or habits, rather than anything morbid or psychologically sick.
  私達わたしたちは彼かれの不健康ふけんこうを考慮こうりょしなければならない。↗

  We must allow for his poor health.

Use 不健康 for the literal sense of being in poor health or having unhealthy habits, and 病的 when something seems morbid or pathological, like an unhealthy obsession or state of mind.

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

• 病的びょうてきpathological
• 不健康ふけんこうpoor health
• ジャンキーjunk (food)
• 体に悪いからだにわるいbad for one's health