Russian ⇄ English

многозначительный adj. stresses
gen.	meaningful (a meaningful look cambridge.org); pregnant (pause/silence: the two sat side by side in a pregnant silence cambridge.org Pickman); significant; expressive; meaning; full of suggestion; full of suggestions; telling; insinuating (в значении "намекающий на что-либо важное": After an insinuating pause that suggested this was probably all Celia’s fault... Abysslooker); comprehensive; momentous; knowing (of a look, smile, etc.)
Gruzovik	important
hist.	prominent (напр., многозначительная демонстрация пулемётов Шандор)
ling.	pithy
Makarov.	fraught with meaning; full of meaning
многозначительно adv.
gen.	meaningfully (Authentic); knowingly (grigoriy_m); emphatically; expressively
Gruzovik	significantly
Makarov.	meaningly; pointedly; with meaning
obs.	momentously

многозначительная: 41 phrases in 6 subjects

Diplomacy	1
General	23
Idiomatic	1
Informal	1
Makarov	14
Teenager slang	1