1. to make something simpler than it actually is; to reduce a complex matter to an overly simple explanation or understanding
Usage: transitive verb; often used with the sense of losing important nuance or detail

Examples

• The textbook tends to oversimply historical events, leaving out crucial context.
• Don't oversimply the problem; there are many factors at play.
• Critics argue that the documentary oversimplies the causes of climate change.
• She oversimplied the scientific findings in her presentation to the general audience.
• It's easy to oversimply complex political issues in a short news segment.
• The teacher warned students not to oversimply their essay arguments.