olivaderadj.
Apparently an editorial misreading of olivaster adj.
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the world > life > the body > skin > complexion > olive > [adjective]
olive1616
olivaster1626
olivader1818
olive-skinned1852
olivander1855
olivart1885
1818 W. Bray Evelyn's Diary 30 May an. 1662 A train of Portuguese ladies..: their complexions olivader and sufficiently unagreeable.
This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2018).
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adj.1818