enter into
Upper Intermediate (B2)formal
To start something official, like a deal or an agreement, or to begin talking seriously about something.
"Both companies entered into a three-year contract to supply the materials."
Hear it in context

Theo Von: Do I Want to Be Healed?
Patristic Nectar · 7:44
You enter into war.

I Stayed in Secret Hotels
Ryan Trahan · 2:11
Enter into the secret bunker.

Noam Chomsky, Fundamental Issues in Linguistics (April 2019 at MIT) - Lecture 1
Abdessamia Bencheikh · 0:19
that enter into constructing syntactic

The Penultimate Day of Cyclethon 5! ft. Ironmouse | Cyclethon 5 Day 14
CDawgVODs · 56:13
Enter into the blue abyss.

How to Defeat the Financial Industrial Complex | Simon Dixon & InfoWars (#1)
Simon Dixon · 20:19
enter into a new debt contract.