make up for lost time

From make up for and lose time.

make up for lost time (third-person singular simple present makes up for lost time, present participle making up for lost time, simple past and past participle made up for lost time)

1. to do something that should have been done earlier but was not, especially when done with energy or enthusiasm.

• make time

• “make up for lost time”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “make up for lost time”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “make up for lost time” (US) / “make up for lost time” (UK) in Macmillan English Dictionary.
• “to make up for lost time”, in Collins English Dictionary.