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one person
being alone; being by oneself
being single; being unmarried
by oneself; alone
just; only; simply
独りで暮らしている。
I live alone.
彼女は独りで海外旅行に行った。
She went on an overseas trip alone.
独りになるとつい考え込んでしまう。
When I am alone, I tend to overthink.