What it means
てでも expresses a strong determination to do something even if doing so requires considerable effort, sacrifice, or an undesirable consequence. It is often translated as “even if one has to” or “by any means necessary.” The form usually follows a verb in the て-form and emphasizes that the speaker will accept the condition in order to achieve the following goal.
Usage note
てでも is stronger and more purposeful than ordinary ても, which simply means “even if” or “although.” It commonly appears with expressions of determination or necessity, and it is not normally used for a neutral statement of fact.
How to use it
彼は何日かかってでも、その仕事を終えます。
He will finish that work no matter how many days it takes.
彼は何日かかってでも、その仕事を終える。
He will finish that work no matter how many days it takes.
Example sentences
徹夜してでも、締め切りまでに報告書を完成させます。
Even if I have to stay up all night, I will complete the report by the deadline.
貯金を取り崩してでも、来年の春までに店を開きたい。
Even if I have to use up my savings, I want to open the store by next spring.
何度失敗してでも、医師になる夢