"madurar (idea)" in English

to age- to grow- to ripen- to bring to fruition- to develop- to mature- to come of age- to come to fruition

idea- ideas- imagination- notion- perception- picture- pointer- thought- intention

to come up with- to conceive- to devise- to invent- to think up- to conjure up- to contrive- to develop- to dope out- to dream up- to elaborate- to piece together- to work out- to architect- to cast about- to ideate