The phrase "out of the house" can be replaced with a variety of synonyms depending on the context in which it is being used. For example, if referring to someone who has left their home for a specific reason, alternate phrases might include "away from home", "out and about", or "out on errands". Alternatively, if the intention is to indicate someone who has moved away from their home permanently, other options might include "moved out", or "relocated". Finally, for less formal contexts, more casual synonyms such as "out the door", "on the move", or "on the go" might be more appropriate.