working like a dog

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Adjectives:

amain, elaborate, energetic, epitonic, faffle, gymnastic, hard, hard at work, hardscrabble, industrious, insudate, laboriferous, laboring, laborious, laboristic, moliminous, on the stretch, operose, painstaking, palestric, panurgic, strained, strenuous, toilsome, troublesome, trusatile, uphill, wearisome, womanfully