high-water
UK[ˌhaɪ ˈwɔːtə]US[ˌhaɪ ˈwɔːtər]
adj
Relating to or marking the highest level reached by a body of water, especially a tide or a river in flood.
n
The highest level reached by a body of water, especially a tide or a river in flood.
Morpheme Breakdown
high
water
high
elevated
water
liquid H2O
Etymology
The compound "high-water" is a transparent combination of two native English words. "High" derives from the Old English hēah, a concept with ancient Proto-Indo-European roots related to loftiness and prominence. "Water" originates from the Old English wæter, tracing back to the essential Proto-Indo-European term for water, wódr̥. The compound's logic is entirely literal, directly describing the state or point where water reaches its maximum elevation. Over time, this specific hydrological term gained a figurative extension, most notably in the idiom "high-water mark," to signify a peak or climax of any endeavor, linking the physical concept of a maximum level to abstract achievement.
Analysis
Structure: high (elevated) + water (liquid H2O)
high: From Old English hēah, meaning "tall, lofty, high, exalted." It is a Germanic root with a functional role of indicating great vertical extent or a superior position.
water: From Old English wæter, meaning "water, a body of water." It is a Proto-Germanic root with the functional role of denoting the liquid substance or a collection of it.
Examples
The flood left debris at the high-water line on the buildings.
The river is expected to reach its high-water point by midnight.
The company's profits that year represented the high-water mark of its success.