"Out the house" is a commonly used phrase referring to leaving one's home or residence. Synonyms for this phrase include "out the door," "out of the building," "out of the domicile," or "out and about." Other variations might include "out on a stroll," "outside the home," or simply "gone." The context of the usage will likely determine which synonym is most appropriate. For instance, if someone is leaving for a leisurely walk or jog, "out on a stroll" might be more apt. Regardless of the specific phrasing, the underlying meaning - that someone is leaving their house or dwelling - remains the same.