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1) General subject: be in a fry, be in a stew, be in anxiety about (о чем-л.), bother, care, concern, exercise, fash, feeze, flutter, fret, fret over (о чем-л.), fuss, have the fidgets to be in a fidget, pother, ruffle, stew, to be in a (fine) stew, to be in a fry, to be in anxiety about (smth.), to be up in the air, trouble, vex oneself about (о ком-л.), worrit, worry, worry about (о чем-л.), agitate oneself, be anxious, feel uneasy, tremble for (о ком-л.), vex oneself about (тревожиться, о ком-л.), worry about (чем-л.), bother about, have kittens, get perturbed, be looking over one's shoulder

2) Mathematics: be concerned about

3) Australian slang: sweat blood

4) Diplomatic term: pass

5) Scottish language: (about) to fash (one's) thumbs

6) Jargon: graum, sweat bullets

7) Business: mind

8) Makarov: be up in the air, bother (one's) head about (smth.) (о чем-л.), fash (one's) head, fret (о лошади), fret over (smth.) (о чем-л.), have a troubled breast, to be in a fidget, to fash (one's) head, to fash (one's) thumbs (about), to fash oneself, trouble head about (о чем-л.), distress oneself, exercise about, exercise over, fret gizzard, fret the gizzard, have the fidgets, feel bad about (о чем-л.), feel concern about (о чем-л.)

9) Taboo: fly like a shit in a hurricane, shit bricks (обыч. употребляется в продолженных временах)