onerous C2+ Topic:Describing Qualities US /ˈoʊnərəs/ UK /ˈəʊnərəs/ See IPA manual Meanings 1 adj involving heavy obligation, effort, or difficulty; burdensome The treaty imposed onerous reparations on the defeated nation. Thesaurus Synonyms 1 adj · involving heavy obligation,... burdensomearduoustaxingdemandingheavyoppressivelaboriousexacting ↔ Opposites easylighteffortlessundemandingtrivial Word family Derived forms onerouslyonerousness Related forms onusexonerate Etymology AI details From Old French 'onereus', from Latin 'onerosus' ('burdensome'), from 'onus' (genitive 'oneris', 'burden, load'). onerosus Latin onus Latin View etymology graph -> Topics Describing Qualities Word Formation & Derivatives External links Cambridge Dictionary Wiktionary Google Images # onerous **Type:** Word **Level:** C2+ **Part of speech:** adj **IPA (US):** /ˈoʊnərəs/ **IPA (UK):** /ˈəʊnərəs/ ## Meanings 1. involving heavy obligation, effort, or difficulty; burdensome ## Examples - The treaty imposed onerous reparations on the defeated nation. ## Synonyms - burdensome - arduous - taxing - demanding - heavy - oppressive - laborious - exacting ## Antonyms - easy - light - effortless - undemanding - trivial ## Derived Forms - onerously - onerousness ## Related Forms - onus - exonerate ## Roots and Affixes - Root: onerosus - Root: onus ## Etymology From Old French 'onereus', from Latin 'onerosus' ('burdensome'), from 'onus' (genitive 'oneris', 'burden, load'). ## AI Etymology Onerous comes from Old French 'onereus', from Latin 'onerosus' ('burdensome'), from 'onus' (genitive 'oneris', 'burden, load'). The etymological trail includes Latin onerosus and Latin onus. As an adjective, onerous means involving heavy obligation, effort, or difficulty; burdensome. The same family is visible in derived forms such as onerously and onerousness and related forms such as onus and exonerate. ## Topics - Describing Qualities - Word Formation & Derivatives markdown