Not yet tested or tried.
The definition of green is having the color between blue and yellow on the color spectrum or being good for the environment.
The definition of tart is something that has a sharp or sour taste.
Having been made or come into being only a short time ago; recent:
Not finished or perfected; incomplete
Find another word for unripe. In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for unripe, like: unpracticed, green, tart, new, raw, inexperienced, unripened, immature, over-ripe, overripe and seedless.