The antonyms for the phrase "putting to proof" are numerous, as it has several meanings. Some possible antonyms include "trusting," "accepting without question," "assuming," "presuming," "believing," "accepting," "relying on," and "taking at face value." These terms describe a lack of skepticism or uncertainty about something, rather than submitting it to rigorous analysis or testing. Antonyms for "putting to proof" might also include "ignoring evidence," "refusing to verify claims," or "avoiding accountability," as these behaviors likewise imply a lack of serious inquiry or commitment to truth. Overall, the antonyms for "putting to proof" suggest a certain intellectual laziness or complacency, rather than a diligent, inquisitive approach to knowledge-seeking.