declinousadj.
Error for declivous adj.In some later dictionaries.
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the world > space > relative position > inclination > [adjective] > inclined from level or sloping > downwards
devexc1420
declining1553
declined1591
declivy1609
declive1635
prone1655
declivous1684
pronate1703
coping1750
downgrade1858
declinous1864
1864 in Webster's Amer. Dict. Eng. Lang.
This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2021).
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adj.1864