slope
Word family
Synonym discussion
Sense: noun/1
Incline is more formal and often appears in technical or mathematical contexts — engineers talk about 'the incline of a road', but everyday speakers are more likely to say 'slope'. Gradient is a technical term for the degree of steepness, especially in geography ('a gradient of 1 in 10') or physics; you rarely hear it in casual conversation. Ramp refers specifically to a constructed slope for moving between levels, such as a wheelchair ramp or a loading ramp. Slant is similar to slope but tends to describe the orientation of lines, writing, or narrow surfaces rather than wide landforms or floors. For everyday use about land or surfaces, slope is the most natural and versatile choice.
Common collocations
Etymology
The word 'slope' first appeared in English during the 1500s. It is thought to have come from the earlier adverb 'aslope', meaning 'at an angle', which may have been formed from the Old English verb 'slūpan' meaning 'to slip or glide' — the idea being that if a surface is at an angle, things tend to slip down it. Over time, the word came to be used both as a noun for the angled surface itself and as a verb describing the action of being at an angle.
First known use
15th century
15th century, in the meaning defined above Verb