angustiae, narrow pass.
arma, weapons.
dēliciae, delight.
dīvitiae, riches.
Īdūs, Ides.
indūtiae, truce.
īnsidiae, ambush.
majōrēs, ancestors.
mānēs, spirits of the dead.
moenia, city walls.
minae, threats.
nūptiae, marriage.
posterī, descendants.
reliquiae, remainder.
tenebrae, darkness.
verbera, blows.

Also in classical prose regularly—

cervīcēs, neck.
fidēs, lyre.
nārēs, nose.
vīscerā, viscera.

Nouns used only in Certain Cases.

[57]. 1. Used in only One Case. Many nouns of the Fourth Declension are found only in the Ablative Singular as, jussū, by the order; injussū, without the order; nātū, by birth.

2. Used in Two Cases.

a. Fors (chance), Nom. Sing.; forte, Abl. Sing.

b. Spontis (free-will), Gen. Sing.; sponte, Abl. Sing.

3. Used in Three Cases. Nēmō, no one (Nom.), has also the Dat. nēminī and the Acc. nēminem. The Gen. and Abl. are supplied by the corresponding cases of nūllus; viz. nūllīus and nūllō.

4. Impetus has the Nom., Acc., and Abl. Sing., and the Nom. and Acc. Plu.; viz. impetus, impetum, impetū, impetūs.

5.