Onerous Definition

ŏnər-əs, ōnər-
adjective
Burdensome; laborious.
Webster's New World
Involving a legal obligation that equals or exceeds the benefits.
Onerous lease.
Webster's New World

Imposing or constituting a physical, mental, or figurative load which can be borne only with effort.

Wiktionary

Origin of Onerous

  • Middle English from Old French onereus from Latin onerōsus from onus oner- burden

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin onerosus (“burdensome"), from onus (“load").

    From Wiktionary

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