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... agitat fastidia verbis:       'Inachia langues minus ac me;...

A woman's name, another partner of the speaker in lines 1-13; now it's the woman's turn to complain about him. From the syntax and meaning of "languescre," "Inachia" and "me" are, it seems, abl. of means: the speaker does not become become flabby with Inachia (by means of Inachia) as quickly as with the present (female) narrator.