1 [as submodifier] to a higher degree than is desirable, permissible, or possible; excessively:he was driving too fasthe wore suits that seemed a size too small for him
informal very:you’re too kind
2in addition; also:is he coming too?
moreover (used when adding a further point):she is a grown woman, and a strong one too
all too ——
used to emphasize that something is the case to an extreme or unwelcome extent:failures are all too common