plug away (at) போராடு pōrāṭu (pooraaḍu) (3 intr) strive hard or struggle with; try hard, attempt, endeavor, make (an/every) effort, exert o.s., do o's best, do all one can, do o's utmost, labor, toil, strain, struggle; (inf.) keep o's nose to the grindstone
Usage:
என்ன சிரமம் இருந்தாலும் போராடவேண்டும் eṉṉa ciramam iruntālum pōrāṭavēṇṭum enna sramam irundaalum pooraaḍaṇum No matter what obstacles arise, we need to keep plugging away at them.