keep plugging away (at something)

To continue trying or working diligently (at something). I'm really not very good at math, but I've got to keep plugging away if I want to get into an engineering program. John kept plugging away at his novel for years, never really expecting for it to ever be published.

See also: away, keep, plug

See also:

plug away
plug away (at something)
peg away
peg away (at something)
peg away at
slug
slug away (at something)
hard at
hard at (something)
hard at it

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