てみせる (te-miseru): Will definitely do; show that one can
～てみせる (te-miseru)
Meaning
Will definitely do; show that one can
Formation and usage
Vて + みせる
Notation: N = noun; V dictionary = dictionary-form verb; V stem = the stem before ます; plain clause = plain-form clause; negative stem = the form before ない. Follow the attachment shown above.
Explanation
Expresses strong determination, distinct from literally demonstrating an action.
Examples
今度こそ、最後まで資料を確認してみせる。
This time I will definitely check the documents all the way through.
今度こそ、最後まで先生に相談してみせる。
This time I will definitely consult the teacher all the way through.
今度こそ、最後まで計画を見直してみせる。
This time I will definitely review the plan all the way through.
今度こそ、最後まで会場を下見してみせる。
This time I will definitely inspect the venue beforehand all the way through.
今度こそ、最後まで十分に練習してみせる。
This time I will definitely practice thoroughly all the way through.
How related patterns differ
きる stresses completion; ぬく perseverance to the end. てみせる shows determination. てやまない sustains a feeling; っぱなし, づめ, and 通し describe duration with different nuances. ては～ては repeats alternating actions.