I. ˈəp-ˈhil adverb
Date: 1535
1. : upward on a hill or incline
2. : against difficulties
seemed to be talking uphill — Willa Cather
II. -ˌhil noun
Date: 1548
: rising ground : ascent
III. -ˌhil adjective
Date: 1613
1. : situated on elevated ground
2.
a. : going up : ascending
b. : being the higher one or part especially of a set ; specifically : being nearer the top of an incline
3. : difficult , laborious