The phrase "without faith" implies a lack of belief or trust in something or someone. There are a number of synonyms that can be used to convey this meaning, including words like doubt, skepticism, incredulity, uncertainty, and disbelief. Another term that may be used in this context is "agnostic," which refers to someone who does not hold a definitive belief in the existence of God or other spiritual principles. Other related phrases might include "lacking conviction," "unconvinced," or "disenchanted." Ultimately, the choice of words will depend on the specific context and the intended tone or emphasis of the message.