Translation guide
In Japanese, expressing 'addition' depends on whether you mean adding something to a group, adding numbers, adding extra items, or adding information. The most common word is 追加 (tsuika) for adding more of something, while 足し算 (tashizan) is used for arithmetic addition. Other expressions cover joining, supplementing, or appending.
The speaker wants to express adding an extra item, amount, or element to something that already exists.
The most common and versatile word for 'addition' in the sense of adding something extra. Used for adding items to orders, lists, plans, etc.
注文に追加してください。
Please add it to the order.
メンバーを追加する。
Add a member.
A transitive verb meaning 'to add' or 'to include'. Often used when adding an ingredient, element, or condition.
塩を加えてください。
Please add salt.
新しいルールを加える。
Add a new rule.
Literally 'attach and add'. Used for adding supplementary information or remarks, often in speech or writing.
一言付け加えてもいいですか。
May I add one more thing?
The speaker is referring to the mathematical operation of adding numbers.
The standard term for addition in arithmetic.
足し算を練習しましょう。
Let's practice addition.
A more formal or technical term for addition, often used in computing or mathematics.
The speaker wants to express building an addition onto a house, building, or other physical structure.
Specifically refers to building an extension or addition to a house or building.
家を増築する予定です。
We plan to build an addition to the house.
Used for adding facilities or equipment, such as extra rooms, lines, or installations.
The speaker wants to add supplementary information, notes, or comments.
Means 'supplement' or 'additional explanation'. Used when adding clarifying information.
補足説明を加えます。
I'll add a supplementary explanation.
Means 'appending a note' or 'additional writing'. Often used in formal documents.
条件を付記する。
Add conditions in writing.
The speaker wants to use a transition phrase meaning 'in addition' or 'furthermore'.
Commonly used to mean 'furthermore' or 'in addition'. Can be used in both spoken and written Japanese.
さらに、新しい計画を発表した。
In addition, they announced a new plan.
The te-form of 加える, used as a conjunction meaning 'in addition' or 'moreover'.
A casual expression meaning 'on top of that' or 'what's more', often used when adding something negative or surprising.
追加 (tsuika) is a noun/suru-verb used for adding items to a set, list, or order. 加える (kuwaeru) is a transitive verb meaning 'to add' in a broader sense, including adding ingredients, conditions, or abstract elements. 追加 is more common in everyday situations like shopping or managing lists.
足し算 (tashizan) specifically means arithmetic addition. Using it to mean 'adding something extra' (like adding a name to a list) would be incorrect. Use 追加 instead.
新機能の追加でアプリが改善された。
The addition of new features improved the app.
英語に加えて、彼女は日本語も話す。
In addition to English, she speaks Japanese.
Perform addition processing.
エレベーターを増設する。
Install an additional elevator.
The price is low, and in addition, the quality is good.
It started raining. On top of that, the wind is strong.