mature
The German word 'reif' is used to describe something or someone that is fully developed or grown. It can also refer to a state of readiness or ripeness. For example, a 'reife Frucht' is a ripe fruit, and a 'reifer Mensch' is a mature person. The word can also be used figuratively to describe someone who is mature in their behavior or thinking.
The ripe apple fell from the tree.
In this example, 'reif' is used as an adjective to describe the mature or ripe status of the apple. This sentence could be used to describe a scene in a garden or orchard, or simply to explain the natural process of fruit maturing and falling from the tree.
He's ripe for the island.
This is an idiomatic expression in German. When someone is described as being 'ripe for the island' (reif für die Insel) it means that they're physically or mentally exhausted and badly in need of a holiday. Here, 'reif' metaphorically refers to being ready, in this context, for a break.
His ideas are ripe for implementation.
In this sentence, 'reif' is used to denote the readiness or develop enough of something for it to be used or implemented. The ideas have been given enough thought or planning that they can now be executed or turned into reality.