How to say weightily in different languages

You can say weightily as avec autorité in the following countries: Benin; Burkina Faso; Burundi; Central African Republic; Chad; Democratic Republic of the Congo; Djibouti; France; French Guiana; French Polynesia; French Southern Territories; Gabon; Guadeloupe; Guinea; Ivory Coast; Madagascar; Mali; Martinique; Mayotte; Monaco; Niger; Republic of the Congo; Reunion; Saint Barthelemy; Saint Martin; Saint Pierre and Miquelon; Senegal; Togo;

You can say weightily as con autoridad, seriamente in the following countries: Argentina; Bolivia; Chile; Colombia; Costa Rica; Cuba; Dominican Republic; Ecuador; El Salvador; Equatorial Guinea; Guatemala; Honduras; Mexico; Nicaragua; Panama; Paraguay; Peru; Spain; Uruguay; Venezuela;

You can say weightily as важка in the following countries: Belarus;

You can say weightily as přesvědčivě in the following countries: Czechia;

You can say weightily as ważki in the following countries: Poland;

You can say weightily as веско in the following countries: Russia;

You can say weightily as переконливо in the following countries: Ukraine;