declivitousadj.
/dɪˈklɪvɪtəs/ Having a (considerable) declivity or slope; steep.
ΘΚΠ
the world > space > relative position > inclination > [adjective] > inclined from level or sloping > steep (except of hills, etc.)
staira1175
slidingc1325
steepa1400–50
side?a1475
right-up1511
steep-down1530
steepwise1542
headlonga1557
steep-up?a1560
pitch hill1560
pendent1587
high-pitched1596
steeped1596
perpendicular1598
steepy1735
declivitous1799
steepish1814
escarped1853
steep-cut1888
swooping1956
the world > the earth > land > landscape > high land > slope > [adjective] > steep
stickleOE
steepc1175
shore14..
steyc1480
proclive1524
steeping1530
brant1545
steepy1565
abrupt1591
dreich1597
downsteepy1603
acclive1616
arduous1711
sharp1725
acclivous1730
rapid1785
declivitous1799
acclivitous1803
scarped1823
proclivitous1860
stoss1878
resequent1906
1799 R. Warner Walk Western Counties (1800) 94 The approach to Culbone church is by a small foot-path, narrow, rugged and..declivitous.
1802 A. E. Bray Jrnl. in Descr. Part Devonshire (1836) I. xiii. 237 The declivitous sides of this tor.
1882 Hist. Berwickshire Naturalists' Club 9 454 In descending the next declivitous hill.
This entry has not yet been fully updated (first published 1894; most recently modified version published online March 2018).
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adj.1799