ほど賢くない

not as smart as

→ ほど
phrase Rare #30,767
not as smart as Usually follows a person or thing being used for comparison.
JA: 私は姉ほど賢くない。
EN: I'm not as smart as my older sister.

トムはメアリーほど賢くないよ。

Tom isn't as smart as Mary.

彼は兄ほど賢くない。

He isn't as smart as his older brother.

きっとトムほど賢くないだろうな。

I’m probably not as smart as Tom.

私は彼ほど賢くない。

I'm not as smart as he is.