[*] 33.
Indeclinable nouns, infinitives, terms or phrases used as nouns, and
words quoted merely for their form, are
neuter:—
-
fās, right;
nihil, nothing;
gummī, gum;
scīre tuum, your
knowledge (to know); trīste valē, a sad
farewell;
hōc ipsum diū,
this very “long.”