Ideally, when memorizing a "feminine" french word for poster, one does NOT think of a girly fish on a poster. "Feminine" is a grammatical set of endings and suffix changes, not a biological predisposition. How is the word poster girly? It's not. It's just a part of that group of endings, and requires according modifying words. From what I've seen, languages like spanish, german, and french have forgotten this. Russians still understand. This is probably because genders actually matter in Russian and still and actually signify groupings of endings, rather than in spanish, where it just means adjectives match differently.