"QT" is typically an acronym for the phrase "quiet time". However, there are a few synonyms that could be used to convey a similar meaning. One option is "meditation", which refers to a period of reflection or contemplation. Another possibility is "solitude", which indicates being alone or isolated. "Reflection", "contemplation", and "introspection" are additional words that could be used to describe a quiet time or period of self-reflection. Overall, there are a variety of synonyms that could be used in place of "QT" depending on the specific context and desired connotation.