dawn upon
Intermediate (B1)formal
To slowly understand something you didn't see before — same as 'dawn on' but more formal.
"It slowly dawned upon the detective that the witness had been lying from the very beginning."
Hear it in context

The Truth About Money and Happiness with Dr Sana Sajan
Dream with Dr Sheen · 10:18
the right team which doesn't just Dawn upon you

How Cadia Almost Survived - Warhammer 40k LORE DOCUMENTARY
Wizards and Warriors · 0:51
and a new era of chaos would dawn upon the galaxy.