научитьdocзre [eo, ui,
официант*dapifer [eri, m];
изрекатьfari, for, fatus
difficilis [e];arduus [a, um];asper [a, um];laboriosus [a, um];impeditus [a, um];involutus [a, um];impotunus [a, um] (pauperies);iniquus [a, um] (tempus;locus;via);+ трудный вопрос ardua quaestio (alicui solvenda est);