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fag; fag away; grub; hammer away (над чем-либо); peg; beaver (обыкн. beaver away); plod; plod away (над чем-либо – at something Anglophile); drudge (над ч.-либо – at something Anglophile); sweat away (at ... – над ... Alex_Odeychuk); grub away; peg away; dig (над чем-либо); plow; grub along (В.И.Макаров); grub on (В.И.Макаров); peg at (В.И.Макаров); peg away at (В.И.Макаров); plod at (В.И.Макаров); slog at (В.И.Макаров); slog away (В.И.Макаров); pour over (To examine, study, or read with intense, careful attention.  thefreedictionary.com KatrinSava); tinker (Sergei Aprelikov); plug away (with something); pore (over); sap (над чем-либо); plough | |||
| be hard at work | |||
| slog through (slog through tough times – переживать нелёгкие времена, упорно работая Nibiru) | |||
| sweat over; pore over | |||
| fag (над чем-либо); beaver away (над Andrey Truhachev); bust a gut (VLZ_58); slave (with над, over) | |||
| sap (над книгами) | |||
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корпеть : 38 phrases in 6 subjects |
| General | 14 |
| Idiomatic | 2 |
| Informal | 7 |
| Makarov | 12 |
| Slang | 2 |
| Uncommon / rare | 1 |