Как по Английски будет convencional

adjective

Done in accordance with convention or etiquette; suitable for or constituting an official or important occasion.

Примеры использования:

A formal dinner party

noun

An evening dress.

Примеры использования:

Cocktail parties every night so the ladies can show off their formals

adjective

Based on or in accordance with what is generally done or believed.

Примеры использования:

A conventional morality had dictated behaviour

noun

The ideas, attitudes, or activities that are shared by most people and regarded as normal or conventional.

Примеры использования:

They withdrew from the mainstream of european politics

adjective

Belonging to or characteristic of the mainstream.

Примеры использования:

Mainstream pop music

verb

Bring into the mainstream.

Примеры использования:

Vegetarianism has been mainstreamed