noun
- the quality or state of being green.
- green vegetation, grass, or the like; verdure or verdancy.
- lack of maturity or experience; youthfulness.
- the state or quality of being naive; innocence; gullibility.
Old English grennes; see green + -ness. Meaning “immaturity” is from early 15c. Walpole coined greenth (1753) in the same sense.