The antonyms for the word trialed are untried, untested, unproven, undiscovered, unexamined, unverified, unvalidated, and unconfirmed. These words indicate the absence of trial, examination, or experimentation. Untried means not yet tried or tested; untested means not yet proven or verified. Similarly, unproven means not yet established, undiscovered suggests something that has not been explored or examined, and unexamined points to the lack of analysis or study. Moreover, unverified means not yet verified or confirmed, while unvalidated suggests something that is not supported by evidence. Therefore, these antonyms portray the opposite of what trialed signifies, which is trial, testing, and examination.