"Free-tongued" is a term used to describe someone who speaks their mind openly and honestly. Synonyms for this phrase include "frank," "outspoken," "blunt," "forthright," "candid," and "direct." These words all suggest a willingness to express oneself freely and without reservation, but some may carry different connotations. For example, "blunt" may imply a lack of tact or sensitivity, while "candid" suggests a straightforwardness that is refreshing and authentic. Ultimately, the choice of synonym will depend on the context and tone of the conversation or written piece, and the desired effect on the audience.