uphillTranslate uphill | into French | into German | into Italian | into Spanish Definition of uphill adverb Pronunciation: /ʌpˈhɪl/ towards the top of a hill or slope:follow the track uphill adjective Pronunciation: /ˈʌphɪl/ sloping upwards:the journey is slightly uphill requiring great effort; difficult:an uphill struggle to gain worldwide recognition noun Pronunciation: /ˈʌphɪl/ an upward slope: he gave mountain biking clinics on handling steep uphillsuphill in other Oxford dictionaries Definition of uphill in the US English dictionary