1. in a manner that is no longer current, fashionable, or relevant; in an old-fashioned way

Examples

• She dressed outdatedly, wearing styles from the 1980s.
• The software operates outdatedly and lacks modern features.
• He spoke outdatedly, using slang that no one recognized anymore.
• The building was decorated outdatedly with faded wallpaper and old furniture.
• The company's outdatedly designed website confused new users.