一緒に|いっしょにisshoni

1. adverbtogether (with)
2. adverbat the same time
3. adverbin one lump; in the same category

• SynonymともにNeutralLeans toward written style, as in 「家族と共に」; it can also mean 'at the same time' or 'both', and sounds more formal than 「一緒に」.
• Synonym共々ともどもNeutralMeans 'together', mostly in written style; often seen in the set phrase 「親子共々」.
• Related共々にともどもにWrittenWritten style: 'together, hand in hand'; typical of speeches and formal addresses, as in 「皆様と共々に」.
• Related相共にあいともにWrittenA written, old-fashioned way to say 'together'; little used today — in everyday speech say 「一緒に」.
• Antonym別々にべつべつにNeutralMeans 'separately, each on their own' — the direct opposite of 「一緒に」, as in 「別々に払う」.
• Antonym単独でたんどくでNeutralMeans 'alone, on one's own', contrasting with 「一緒に」 for doing things together with others.

Say 「一緒に」 for everyday 'together', as in 「一緒に行こう」. 「共に」 and 「共々」 suit written or formal settings such as speeches. For the opposite meaning, use 「別々に」 or 「単独で」.

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

1. 二人ふたり以上いじょうの人ひとが、同おなじ時間じかんに同おなじ場所ばしょで何なんかをする様子ようす。
2. 複数ふくすうのことが、同おなじ時刻じこくに起おこる、または行おこなわれる様子ようす。
3. 異ことなるものを、同おなじグループや種類しゅるいとして扱あつかう様子ようす。