the tip of the iceberg

US /ðə tɪp əv ði ˈaɪs.bɜːɡ/
UK /ðə tɪp əv ði ˈaɪs.bɜːɡ/
"the tip of the iceberg" picture
1.

hujung gunung ais

only a small, visible part of a much larger, hidden problem or situation

:
The recent scandal is just the tip of the iceberg; there's much more corruption to uncover.
Skandal baru-baru ini hanyalah hujung gunung ais; terdapat lebih banyak rasuah yang perlu didedahkan.
His current financial troubles are just the tip of the iceberg of his deeper debt problems.
Masalah kewangan semasanya hanyalah hujung gunung ais masalah hutangnya yang lebih mendalam.