見せてやる

I'll show you

→ 見せる
phrase Uncommon #12,760
I'll show you A casual, assertive expression meaning “I’ll show you” or “let me show you.” The やる adds a forceful, boastful, or sometimes challenging tone; it can also mean showing something to someone as a favor.
JA: 俺の新しい技を見せてやる。
EN: I'll show you my new technique.

どれ見せてやるかな

Which one should I show you?

— 天空の城ラピュタ (1986)

お前にだけ見せてやる

I'll show it only to you.

— 動くな、死ね、甦れ! (1990)

見せてやる

I'll show you.

— ラストエンペラー (1987)

証拠なら見せてやる

If you want proof, I’ll show you.

— ANORA アノーラ (2024)

見せてやる

I'll show you.

— TAXi (1998)