Nauseous

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early 17th century: from Latin nauseosus (from nausea ‘seasickness’).

wiktionary

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From Latin nauseōsus(“causing nausea”), corresponding synchronically to nausea +‎ -ous.

etymonline

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nauseous (adj.)

c. 1600, "inclined to nausea, easily made queasy" (a sense now obsolete), from nausea + -ous. Sense of "causing nausea or squeamishness" is attested from 1610s. For distinction from nauseated see nauseate. Related: Nauseously; nauseousness.