heavily involved

Translations
сильно вовлечённый
He is heavily involved in the negotiations.
Он сильно вовлечённый в переговоры.
Definitions
Being deeply engaged or actively participating in a particular activity, project, or situation, often implying a significant commitment of time, effort, or resources.
Words
involved

adjective
вовлечённый
heavily

adverb
тяжело