Not proportioned; unsymmetrical; unsuitable to something else in bulk, form, value, or extent; out of proportion; inadequate; as, in a perfect body none of the limbs are disproportionate; it is wisdom not to undertake a work disproportionate means.
Optimistic people play a disproportionate role in shaping our lives. Their decisions make a difference; they are inventors, entrepreneurs, political and military leaders - not average people. They got to where they are by seeking challenges and taking risks. Daniel Kahneman