непоколебимый
perpetuus [a, um]
прилежание
diligentia [ae, f];
идеальный
perfectus [a, um]
clarus [a, um];
planus [a, um];
intelligibilis [e];
ad intelligendum facilis[e];
qui intelligi potest;
perspicuus [a, um];
apertus [a, um];
dilucidus [a, um];
liquidus [a, um];
candidus [a, um] (genus dicendi);