他界|たかいtakai[0]heiban (flat)

1. noundeath; the next world
2. suru verb, intransitive verbto pass away; to die
   祖父そふは５年ねん前まえに他界たかいした。↗

   My grandfather died five years ago.

• Synonym死没しぼつWrittenWritten/formal prose. Records the bare fact of dying, as in documents; unlike 「他界」, it is not a euphemism for passing to another world.
• Synonym死亡しぼうNeutralNeutral and objective, the standard word in news reports and statistics; more direct than the euphemistic 「他界」.
• Synonym死去しきょNeutralNeutral word for a person's death, the usual choice in news obituaries; more matter-of-fact than 「他界」.
• Synonym没ぼつWrittenWritten: dying, usually after a name or date; as a prefix it instead means lacking, and it can also mean a rejected manuscript. Terser than 「他界」.
• Synonym逝去せいきょWrittenWritten and honorific, speaking of a death with respect; more solemn than 「他界」.
• Synonym物故ぶっこWrittenWritten euphemism for dying, the kind of word used in rosters and records; more bureaucratic than 「他界」.
• Synonym往生おうじょうWrittenWritten, with Buddhist coloring: passing on to the Pure Land; also giving up a struggle or submitting.
• Synonym終焉しゅうえんWrittenWritten word for the end of life or of things, often with a nuance of one's final years; wider in scope than 「他界」.
• Synonym成仏じょうぶつNeutralNeutral word for becoming a Buddha, resting in peace after death; also said colloquially, as in 「成仏する」.
• Synonym辞世じせいWrittenWritten word for taking leave of this world, that is, dying; it also names the poem composed just before death.
• Synonym死しNeutralThe plain noun for death itself, the ending of life; the most neutral word of all, with no euphemism, unlike 「他界」.
• Synonym死ぬしぬCasualThe everyday verb 'to die' — colloquial and blunt, with none of 「他界」's softening; the default choice in speech.
• Synonym亡くなるなくなるNeutralThe everyday polite way to say someone has passed; a euphemism like 「他界」 but far more common in daily conversation.
• Synonym絶命ぜつめいWrittenWritten word for the moment life is cut off, breathing one's last; blunt, not a euphemism like 「他界」.
• Synonym絶息ぜっそくWrittenRare written word for dying as the stopping of breath; physiological in flavor, unlike the softening 「他界」.
• Synonym長逝ちょうせいWrittenRare and literary: departing forever, a rhetorical, bookish way of speaking of a death; more literary in style than 「他界」.
• Synonym寂滅じゃくめつFormalFormal Buddhist term for entering nirvana, extended to death itself; strongly religious, unlike 「他界」.
• Synonym落命らくめいWrittenWritten word for losing one's life, typically in an accident; not a polite euphemism like 「他界」.
• Synonym没するぼっするWrittenWritten verb: to pass away or to sink; used in biographical notes for dates of birth and death.
• Synonym永眠えいみんWrittenWritten euphemism for eternal rest, typical of obituaries; like 「他界」, it softens the fact of death.
• Antonym生存せいぞんNeutralAntonym: to exist, to stay alive — the state opposite the passing that 「他界」 describes.
• Antonym現世げんせWrittenWritten antonym: this world, the present life, set against the other world that 「他界」 points to.
• Antonymうつし世うつしよWrittenWritten antonym: the visible world before our eyes, opposed to the world beyond that 「他界」 evokes.

Use 「他界」 to speak of someone's death euphemistically, as in 「祖父が他界した」. For a respectful, solemn tone choose 「逝去」; in everyday speech the soft 「亡くなる」 is the norm; news reports use 「死去」; to state death bluntly, say 「死ぬ」. The opposite state is 「生存」.

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

1. 別べつの世界せかい。
2. 死者ししゃの世界せかい。あの世よ。
3. 死者ししゃの世界せかいに行いくこと。死しぬこと。
4. 死者ししゃの世界せかいに行いく。死しぬ。