Being out of practice means not having the same skill level as before due to lack of practice or experience. Some synonyms for out of practice can be rusty, amateurish, unpracticed, unaccustomed, untrained, unskilled, green, raw, or inexperienced. Other similar phrases include "out of form", "not up to scratch", "off one's game", "out of touch", and "unfamiliar territory". It is important to continue practicing and honing skills to avoid becoming out of practice or rusty. Regular practice can help maintain proficiency and prevent skills from deteriorating over time.