— acclivitous, acclivous /euh kluy"veuhs/ , adj.
/euh kliv"i tee/ , n. , pl. acclivities .
an upward slope, as of ground; an ascent (opposed to declivity ).
[ 1605-15; acclivitas, equiv. to accliv ( is ) steep ( ac- AC- + -clivis, adj. deriv. of clivus slope) + -itas -ITY ]