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1) General subject: be gathered to fathers, close one's days, decease, depart, die, expire, gasp out life, gasp out one's life, pass away, pay debt to nature, pay last debt, to be gathered to (one's) fathers, to be gathered to (one's) fathers, turn up heels, turn up toes, go to grass, go to last home, go to long home, go to long rest, go to own place, pass over, pay the debt of nature, pay the debt to nature, past away

2) Obsolete: give up the ghost

3) Australian slang: cash in (one's) chips, kick the bucket

4) Jargon: turn up one's heels, pass on to the Great Beyond

5) Sublime: be no more, to be no more

6) Makarov: go beyond the veil, go home, go over to the majority, go the way of all the earth, go the way of all the flesh, go to (one's) last home, go to (one's) long home, go to (one's) long rest, go to (one's) own place, go to glory, go to heaven, go west, pay (one's) debt to nature, pay (one's) last debt, take the ferry, close days, close eyes, cross the Stygian ferry, end days