disproportionate
adj.too large or too small when you compare it to something else. It describes a situation where things are not in balance.
adj.out of proportion; of an amount or size that is too large or too small in relation to something else. Often used to describe social or economic imbalances.
“The punishment was disproportionate to the crime.”
“A disproportionate amount of the city's budget is spent on road repairs compared to public education.”
“The study revealed that low-income families spend a disproportionate share of their earnings on basic utilities, leaving little room for savings or emergency expenses.”
Commonly followed by the preposition 'to'. Often used in formal or academic contexts to discuss statistics and social justice.
When describing a part of a whole, use 'of'; when comparing two different things, use 'to'.
Usage disproportionate burden
“Skills Minister Baroness Jacqui Smith said the reforms would ensure workers are "fairly paid" but business groups said the cost to employers was "disproportionate" compared to how much it would help workers.”
“Children are bearing a disproportionate share of the burden.”
From dis- + proportionate.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.