1. past tense and past participle of dumb; made less intelligent or intellectually challenging
Usage: informal; often used in ‘dumbed down’

Examples

• The textbook was dumbed down for younger students.
• Critics argued that television had dumbed down public discourse.
• The complex theory was dumbed down into simple terms.
• She felt the curriculum had been dumbed down too much.
• The movie dumbed down the original novel’s themes.
• They dumbed down the software interface for beginners.