The phrase "ruined good" can have several antonyms, depending on the context. If referring to a product, antonyms could include "untarnished good", "unblemished good", or "undamaged good". If referring to a relationship, antonyms could include "strong relationship," "healthy relationship," or "intact relationship". In terms of physical health, antonyms could include "well-being," "soundness," or "wholeness." Alternatively, for a more abstract meaning, antonyms could include "successful venture," "prosperous enterprise," or "fruitful investment." Whatever the context, the antonyms for "ruined good" signify a state of positivity and completion, with no damage, loss, or disappointment.