Achenes, a type of small, dry, one-seeded fruit, typically have a hard outer shell, and are commonly found in plants such as sunflowers and dandelions. Antonyms, on the other hand, are words that have opposite meanings. Some antonyms for "achen" include "fleshy," "juicy," and "soft," which might describe fruits like apples or oranges. Other antonyms include "moist," "damp," or "wet," which could describe things like soil or a humid environment. Regardless of the antonym, it is clear that "achen" is a word with specific connotations, and that its antonyms emphasize the qualities that it lacks.