The word "schitzy" is an informal slang term that describes someone who is inconsistent, scattered, or exhibiting unpredictable behavior. Opposite antonyms for this word include reliable, consistent, predictable, and stable. A reliable person is trustworthy, consistent in their actions, and can be counted on to deliver results. Consistent means maintaining the same coherent behavior or pattern over time. Predictable refers to being able to forecast or anticipate the behavior of an individual. Finally, stable refers to an individual who is firm or steadfast in their beliefs, emotions, or behavior, and is not prone to sudden changes or unexpected outbursts. In essence, antonyms for schitzy are all about being steady, reliable, and predictable, rather than erratic or unpredictable.