The word "most unproportionate" means something that is extremely disproportionate or not balanced. Some antonyms for this word could include "proportionate," "balanced," "adequate," "equal," "symmetrical," "justified," and "fair." When something is proportionate, that means it is in harmony with other things around it, whereas if it is unproportionate, it is out of balance. A balanced solution is one that takes into account all relevant factors and considers the needs of all parties involved. Adequate and equal both suggest a level of sufficiency or accuracy, while symmetrical relates to matching or corresponding shapes or sizes. Justified and fair both suggest something that is reasonable, deserved, or morally right.