Semantic satiation is a psychologicalphenomenon where repeating a word or phrase many times causes it to temporarily lose its meaning, making it sound like a meaningless collection of sounds. This occurs because repeated activation of a neural pathway to a word's meaning can cause temporary fatigue or inhibition, leading the brain to re-regulate its focus and temporarily cease to process the word's meaning.
I kept repeating the word 'crowded' over and over for a minute, and by the end, it just sounded like a weird noise—total semantic satiation!