ukr.vitalinguist — How to say it in authentic Ukrainian

base on
B1 verb — base sth on sth

If you base something on facts or ideas, you use those facts or ideas to develop it.

Bilingual dictionary attestations (1 dicts, 1 rows)

Українсько-англійський словник
обґрунто́вувати [обгрунто́вувати] (-ую, -уєш) I vt ; обґрунтува́ти [обгрунтува́ти] (-ту́ю, -у́єш) P vt to motivate, argue, base on good reasoning; to justify (by reasoning).

Live source: https://e2u.org.ua/s?w=base%20on&highlight=on