Pronunciation: (sub-dOOd', -dyOOd'),[key] —adj. 1. quiet; inhibited; repressed; controlled: After the argument he was much more subdued. 2. lowered in intensity or strength; reduced in fullness of tone, as a color or voice; muted: subdued light; wallpaper in subdued greens. 3. (of land) not marked by any striking features, as mountains or cliffs: a subdued landscape.