There are several synonyms for the phrase "were naive" that can be used to describe someone who lacked experience, judgment, or sophistication in a particular situation. Words that can be used include "gullible," "innocent," "unsuspecting," "credulous," "naive," "ingenuous," and "unworldly." These words all suggest a lack of understanding or a lack of experience with the world, which can lead to being easily fooled or taken advantage of. Whether it is a young person who is just starting to navigate the complexities of the adult world or someone who is simply unaware of the true nature of a situation, being naive can be both a blessing and a curse.