惨禍|さんかsanka[1]atamadaka (head-high)

1. nouncalamity; disaster; catastrophe

• Synonym災害さいがいNeutralDisasters from typhoons, earthquakes and the like, or from human accidents; objective and neutral, where 「惨禍」 stresses how horrific things are.
• Synonym惨事さんじNeutralA horrific accident or disaster, as in 「大惨事」; the emphasis is on how gruesome the accident is.
• Synonym災難さいなんNeutralAn unexpected disaster, common in speech, as in 「とんだ災難」; the emphasis is on being unlucky rather than on anything gruesome.
• Synonym惨劇さんげきNeutralA tragedy — a horrific event seen almost as a drama; the emphasis is on the theatrical, tragic quality of what happened.
• SynonymカタストロフィーNeutralA loanword for a huge catastrophe or tragic ending; literary or academic in tone, with the focus on the sudden, dramatic turn of events.
• Synonym災禍さいかWrittenA written-style word for disaster that stresses the damage done; close in meaning to 「災害」.
• Synonym災厄さいやくWrittenWritten style and not often used; a calamity or misfortune, but it does not stress how gruesome the event is.
• Synonym厄災やくさいWrittenWritten style for an unexpected calamity or misfortune with an ominous feel; unlike 「惨禍」 it does not stress how horrific the event is.
• Related破局はきょくNeutralThe collapse of a situation or the breakdown of a relationship; the emphasis is on things ending in ruin, not on a gruesome event.
• Related破滅はめつNeutralRuin or downfall — being destroyed or disgraced beyond recovery; the emphasis is on utter, hopeless ruin.
• Related災いわざわいNeutralThe native-Japanese word for calamity or harm, used across a wide range of contexts, as in 「口は災いの元」.
• Related壊滅かいめつNeutralUtter destruction that leaves nothing in its original state — of cities, organizations or armies; 「惨禍」 is the horrific disaster itself.
• Related惨害さんがいWrittenWritten style; heavy, ravaging damage, as in 「戦争の惨害」; the focus is on the damage suffered rather than the disaster itself.
• Related厄難やくなんWrittenWritten style and not often used; calamity or misfortune, without stressing how gruesome the event is.
• Related凶変きょうへんWrittenWritten style for an ominous event such as an assassination; it carries an ill-omened coloring.

Use 「惨禍」 for a horrific calamity, especially from war or disaster, as in 「戦争の惨禍」; it leans written. For plain talk about natural disasters say 「災害」, for a gruesome accident 「惨事」, for bad luck 「災難」, and in native style 「災い」. 「破局」 and 「破滅」 cover collapse and ruin, 「惨劇」 a tragedy, 「カタストロフィー」 a literary catastrophe.

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

1. 惨むごたらしい禍わざわい。