TAKOBOTO

completely; until the end
Parents of children who have absolutely no interest in studying are completely at a loss.
完全に〜する; 最後まで〜する

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がんばりぬく

keep trying til the end

あなたはおおくのこんなんにたえぬかなければならない。

You have to go through many hardships.

がんばりぬいたがけっきょくできなかった。

I made an effort to finish, but in the end, I couldn’t finish.

こんなんにあってもさいごまでやりぬくきもちをすてないで、がんばりなさい。

No matter how difficult, don't give up your will to follow through . Do your best.

むずかしいすうがくのもんだいをかんがえぬいてこたえがだせたときは、うれしかった。

I thoroughly thought about the difficult math problem, and when the answer came to me, I was glad.

べんきょうにはぜんぜんきょうみをもたないこどもに、りょうしんはこまりぬいている。

The parents of children who have absolutely no interest in studying are completely at a loss.

わたしのそふはふたつのせんそうをいきぬいた。

My grandfather survived two wars.

さいごまでやりぬけ。

Carry it through.

＊This is a strong expression.

FORMATION:
Ｖ(minus ます) + ぬく

rubyhatchet

- you do something completely/ till the end, but it takes great pain, effort, sacrifice to comlplete the action ｛→せっかく｝

ex：最後まで走りぬく。Run to the end (with great effort).

deeana

Should not be the kanji in the last example 299 耐え抜かねばならない rather this????

ainkin

You are right. For 困難, 耐え抜くis right kanji.

Miki