が深い

is deep

→ が
phrase Uncommon #15,447
is deep Used to describe something as deep, including physical depth (such as water, snow, or fog) and figurative depth (such as feelings, troubles, or roots).
JA: この湖は中央が深い。
EN: The middle of this lake is deep.

そっちのほうはが深いからその先

The mud is deep that way, so go past it!

— となりのトトロ (1988)

俳句季節関連が深い

Haiku is closely associated with the seasons.

悩みが深いのよ

I’m really troubled.

— アメリ (2001)

その湖はこの地点が深い

The lake is deep at this point.

相当高いシステムは想像以上にが深い

The extremely expensive system is more deeply entrenched than expected.

— エリート・スクワッド ブラジル特殊部隊BOPE (2010)

が深い

That's pretty dark.

— ブレット・トレイン (2022)

湖のこの場所が深い

This part of the lake is deep.

その問題はよりも君のと関係が深い

That issue has more to do with you than with me.

彼は自己中心的が深い

He is selfish and greedy.

川はこの辺が深い

The river is deep around here.

日本語は思ったよりが深い

Japanese has more depth than I expected.