lag behind in (something)

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lag behind in (something)

To be or become tardy or late in doing something. The bank started putting a lot of pressure on us when we began lagging behind in our mortgage payments. I know that she is an excellent reader and writer for her age, so I don't understand how Sally can be lagging behind in language arts.
See also: behind, lag

lag behind in something

to fall behind in something. I am lagging behind in my car payments. She is lagging behind in her homework assignments.
See also: behind, lag