Disproportionate means out of balance or not matching up properly in size, amount, or importance. When something is disproportionate, one part is too large or too small compared to another part.

Imagine a snowman where the bottom snowball is huge, the middle one is tiny, and the head is enormous. Those disproportionate sizes would make it look weird and might even make it fall over. Or think about getting grounded for a month because you forgot to make your bed once: that punishment would be disproportionate to what you actually did wrong.

The word often appears when people discuss fairness. If one student does most of the work on a group project but everyone gets the same grade, that student might feel they carried a disproportionate share of the workload. In a more serious context, people might say that certain communities face a disproportionate impact from pollution, meaning they suffer far more than other areas even though they didn't cause more of the problem.

The opposite is proportionate, which means things are properly balanced and match up the way they should. When you're building something, cooking, or trying to be fair, you want the parts to be proportionate, not disproportionate.