The phrase "dost to a T" is an idiom that means something is just right or perfect for a particular situation or person. If you are looking for synonyms for "dost to a T," you could consider using other idiomatic expressions that convey the same sentiment, such as "hits the mark," "fits like a glove," or "spot-on." Other possibilities might include phrases like "exactly what I need," "perfectly suited," or "just the ticket." No matter which expression you choose, the goal is to convey the idea that something is precisely tailored to meet your needs or preferences.