what is the definition of modernism

The concept of modernism emerged in the eighteenth century when the classicists mocked those who opposed them and called them modernists. Dr Samuel Johnson says in the Dictionary of the English Language that the word was coined by Johnathan Swift in a letter to Alexander pope. The word was given a new meaning by the French poet Bordelaire and the publication of his collection of poem《恶之花》marked the beginning of modernism in literature. Now it is a comprehensive term　applied to international tendencies and movements in all creative arts in the 20th century. In a broad sense, it is applied to writing marked by a strong and conscious break with traditional forms and techniques of expression.

现代主义的定义是什么