Most double-gaited is a phrase typically used to describe someone or something that is inconsistent or hypocritical. There are a variety of synonyms that can be used to convey a similar meaning, including duplicitous, two-faced, hypocritical, deceitful, or disingenuous. These words all suggest a lack of sincerity or authenticity, and imply that the person or thing in question is not to be trusted. Other options might include ambiguous, insincere, or unreliable. Ultimately, the choice of synonym will depend on the context and tone of the statement, as well as the intended audience.