This phrase means 'I cannot do it'. You use it to politely refuse a request. It shows you are sorry you cannot help.
Noun + いたしかねますPrimary
This phrase means 'I cannot do it'. You use it to politely refuse a request. It shows you are sorry you cannot help.
誠に申し訳ございませんが、その製品の修理はいたしかねます。
We sincerely apologize, but we are unable to repair that product.
大変恐縮ですが、ご要望にはお応えいたしかねますので、何卒ご了承ください。
We are very sorry, but we are unable to meet your request, so we humbly ask for your understanding.
先日の時点では情報が不足しており、明確なご回答はいたしかねました。
At that point the other day, we lacked sufficient information and were unable to provide a clear answer.
弊社では対応していない部品のため交換はいたしかねますが、代替案をご提案いたします。
Because this is a part our company does not support, we are unable to perform a replacement, but we will propose an alternative.
規定により、一度ご購入いただいた商品の返品は、お受けいたしかねます。
As per our regulations, we are unable to accept returns for items that have been purchased.
This phrase is very polite. It shows you do not want to say no. It means you cannot do something because of rules, not because you don't want to help. It helps keep things friendly.
This phrase is like saying "I cannot" in a very polite way. It is more formal than "grammar-kanemasu." It is also more formal than "grammar-dekikanemasu." It is not a direct "I cannot do it." Instead, it gently refuses a request. This shows respect to the person asking.
Don't use this when talking to friends. For example, don't say "I can't go to the party" with this phrase. This phrase is very formal. It is for business. You use it at work. You use it with customers. You say it when you cannot do something. It shows you are sorry. It shows you respect the other person.
Contrasts with(1)
More formal alternatives(2)
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