Descend into Definition 1 of 3Pro Tip 1/3Negative Shift Use when something changes for the worse, often suddenly or unexpectedly. The party descended into mayhem after the music stopped. Pro Tip 2/3Emotional Impact Shows a strong emotional change, often towards confusion or disorder. Her mind descended into panic as the deadline approached. Pro Tip 3/3Group Dynamics Indicates a collective decline in behavior or cooperation within a group. The committee descended into infighting over the new policy.