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on·er·ous

(ŏnər-əs, ōnər-)

adj.

1. Troublesome or oppressive; burdensome. See Synonyms at burdensome.

2. Law Entailing more liabilities than benefits or imposing significant obligations.

[Middle English, from Old French onereus, from Latin onerōsus, from onus, oner-, burden.]

oner·ous·ly adv.

oner·ous·ness n.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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