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Verb: plug away  plúg u'wey
  1. Work doggedly or persistently
    "She keeps plugging away at her dissertation";
    - peg away, slog, keep one's nose to the grindstone, keep one's shoulder to the wheel
  2. Persist in working hard
    "Students must plug away at this problem";
    - plug

Derived forms: plugging away, plugs away, plugged away

Type of: hang in, hang on, hold on, persevere, persist, work