Langimage
English

waterweed

|wa-ter-weed|

B2

🇺🇸

/ˈwɑtərwiːd/

🇬🇧

/ˈwɔːtəwiːd/

aquatic plant regarded as a weed

Etymology
Etymology Information

'waterweed' originates from English as a compound of 'water' and 'weed'; 'water' ultimately comes from Old English 'wæter' meaning 'water', and 'weed' comes from Old English 'wēod' meaning 'herb, plant, or weed'.

Historical Evolution

'waterweed' was formed in post-medieval English by combining the words 'water' and 'weed' and came into use as a common name for submerged aquatic plants (for example Elodea) in modern English.

Meaning Changes

Initially, the compound simply meant 'a weed that grows in water' and over time it has retained that basic sense while sometimes being used more specifically for certain genera (e.g. Elodea) or invasive aquatic plants.

Meanings by Part of Speech

Noun 1

a submerged aquatic plant (often of the genus Elodea) that commonly grows in ponds, streams, and other freshwater bodies; sometimes invasive.

Waterweed clogged the pond's outlet, slowing the flow.

Synonyms

Noun 2

any aquatic plant regarded as a weed — i.e., undesirable or invasive vegetation in a water body.

Boaters complained that waterweed wrapped around propellers and made navigation difficult.

Synonyms

Last updated: 2025/08/16 01:38