термоядерный
thermonuclearis [e];
+
старый
senex [senis];
vetus
полезно
utiliter;
salubriter;
juvat;
arcanus [a, um];
absconditus [a, um];
tacitus [a, um] (aliquid tacitum relinquere, tenere;
judicium;
vulnus);
secretus [a, um];
occultus [a, um];
abditus [a, um];
obscurus [a, um];