Zilla/ˈzɪlə/ Definition 1 of 2Pro Tip 1/3Colloquial Usage Use 'zilla' informally, often in casual conversation among friends or on social media. He becomes a total foodzilla during buffets! Pro Tip 2/3Not Always Negative 'Zilla' can be positive or negative, depending on context. She's a starzilla on the stage with her amazing performances. Pro Tip 3/3Emotive Exaggeration 'Zilla' often exaggerates a trait for emotional effect, but not literally huge. After cleaning, I feel like a neatzilla!