1. The philosophical belief that reality is fundamentally mental, mentally constructed, or otherwise immaterial rather than physical or material.
German Idealism was a major philosophical movement in the 19th century.
O Idealismo Alemão foi um importante movimento filosófico do século XIX.
2. The practice of forming or pursuing ideals, especially unrealistic or unattainable ones; the tendency to regard things in an ideal form rather than as they are.
Her youthful idealism led her to pursue a career in social justice.
Seu idealismo juvenil a levou a seguir uma carreira na justiça social.
3. The quality of being guided by high principles and ideals rather than practical concerns.
The artist's idealism was evident in every brushstroke.
O idealismo do artista era evidente em cada pincelada.