The word "allineated" refers to aligning or bringing things into a line or order. There are several antonyms for this word that might help to convey an opposite meaning. For example, the word "disjointed" means something that is disconnected or lacks a coherent structure. "Disorganized" is another antonym that implies things are not in order or are not arranged in a coherent way. "Unaligned" is another antonym which suggests a lack of conformity or alignment between different elements. Other possible antonyms include "jumbled," "chaotic," "cluttered," or "fragmented." Choosing the right antonym can help to impart a specific meaning or tone to a piece of writing.