What does downhill mean?
Downhill functions as a noun, adjective, and adverb in English, all centered on the idea of descent. As a noun it names a downward slope, particularly one used for skiing or cycling races; as an adjective or adverb it describes anything moving or directed toward the bottom of a slope, as in a downhill run or coasting downhill. The word also has a well-established figurative use: when someone's fortunes, health, or the quality of something 'goes downhill,' it deteriorates progressively. This metaphorical sense lends the word a distinctly negative connotation, captured idiomatically in phrases like 'it's all downhill from here,' which can mean either easy progress ahead or inevitable decline depending on context. Downhill derives from the simple combination of 'down' and 'hill' and is standard across British and American English. Its clarity and versatility make it useful in everyday description, sport, and figurative commentary alike.
Toward the bottom of a hill or slope; in a descending direction.
"The children rolled the ball downhill and chased after it."
Situated or moving toward the bottom of a slope; descending.
"She won gold in the downhill event at the championships."
A downward slope on a hill or mountain, especially one used for skiing or cycling.
"The final downhill tested every rider's nerve."
The plural applies only to the noun sense referring to slopes or ski-race events.
"The course features two steep downhills separated by a long flat stretch."
The 'down' in downhill isn't just any 'down' — it comes from Old English dūn, meaning hill itself, so downhill literally means 'toward the hill's foot.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of downhill
Downhill was formed transparently within English by compounding the preposition 'down' with the noun 'hill.' The element 'down' itself traces to Old English dūn, which originally meant 'hill' or 'mountain' — a sense still preserved in southern English place-name terms like the South Downs — before shifting to its modern directional meaning. The compound appears to have become established in English by the early modern period, and it remains fully regular across British and American usage. Related forms sharing this Germanic root include 'dune,' borrowed into English via Dutch or French, and regional terms such as 'downland'.
Related word forms
How downhill is actually used
Downhill is common in both literal and figurative use. The figurative sense ('go downhill') carries a negative connotation of decline and is frequent in informal speech. In winter sports, 'the downhill' names a specific high-speed alpine ski racing event.
Easily confused with downhill
Uphill refers to the upward direction toward the top of a slope, while downhill refers to the downward direction toward the bottom.