Brain Rot Or Brainrot 2025. The phrase “brain rot” spiked 230 percent from 2023 to 2025, according to the makers of the oxford english dictionary Oxford defines brain rot as “the supposed deterioration of a person’s mental or intellectual state, especially viewed as the result of overconsumption of material (now.

The unofficial mental health diagnosis is dubbed brain rot. The term’s use increased by 230% between 2023 and 2025.