How to say proficient in different languages

You can say proficient as bedreven in the following countries: Aruba; Belgium; Curacao; Netherlands; Netherlands Antilles; Sint Maarten; Suriname;

You can say proficient as proficiente in the following countries: Angola; Brazil; Cabo Verde; Guinea-Bissau; Mozambique; Portugal; Sao Tome and Principe;

You can say proficient as kompetent in the following countries: Austria; Germany; Liechtenstein; Switzerland;

You can say proficient as etevä in the following countries: Finland; Northern Mariana Islands;

You can say proficient as εντριβής in the following countries: Cyprus; Greece;

You can say proficient as competente in the following countries: Italy; San Marino;

You can say proficient as vilunud in the following countries: Estonia;

You can say proficient as jártas in the following countries: Hungary;

You can say proficient as lietpratējs in the following countries: Latvia;

You can say proficient as biegły in the following countries: Poland;

You can say proficient as zbehlý in the following countries: Slovakia;