alone; by oneself; on one's own
Indicates doing something without others; can be used for actions, states, or situations where one is unaccompanied.
He went on a trip alone.
I can do this homework by myself.
一人で stresses doing something without other people around, while 自分で stresses doing it through one's own effort rather than relying on someone else's help.
一人で means doing something alone, whereas 一緒に means doing something together with others.
一人 is the noun meaning 'one person,' while 一人で is the adverbial form meaning 'alone' or 'by oneself'; learners often drop the で by mistake.
Standard kanji spelling; the most common written form.
Kana spelling; common in casual writing or for learners.
Emphasizes solitude or aloneness; often used in literary or emotional contexts.
Numerical variant; seen in informal writing or when space is limited.
From 一人 (ひとり, 'one person') + で (particle indicating means or state). The で particle marks the manner in which an action is performed.