The word "pre-tend" means to behave in a false or deceptive manner to deceive someone. Antonyms of "pre-tend" would be words that mean to act truthfully, honestly or sincerely. Some words that could be considered antonyms for "pre-tend" include "confess, reveal, disclose, candid, forthright, honest, frank, open, direct." These words all convey a sense of honesty and transparency, which directly oppose the concept of pretending. In summary, using antonyms that convey honesty and frankness can be essential in communication and building trust with others.