疾しっ痛つう惨さん憺たん

• 不ふ安あん

  不安 is the common word for anxiety or unease, used in everyday language, while 疾痛惨憺 is a rare, literary yojijukugo for extreme worry.

• 心しん配ぱい

  心配 is the standard term for worry or concern; 疾痛惨憺 conveys a much heavier, more dramatic sense of anguish.

• 疾しっ痛つう惨さん憺たん

  Rare yojijukugo; the kanji spelling is the standard representation for this set phrase.

• 疾しっ痛つう惨さん澹たん

  Variant kanji form using 澹 instead of 憺; both are rare and essentially interchangeable.

A yojijukugo of classical Chinese origin, combining characters for pain, grief, and anxiety. The exact historical derivation is uncertain, but it is used in literary Japanese to describe profound mental distress.