[222]. The Ablative with cum is used with verbs of motion to denote accompaniment; as,—
cum comitibus profectus est, he set out with his attendants;
cum febrī domum rediit, he returned home with a fever.
1. In military expressions the Ablative may stand without cum when modified by any adjective except a numeral; as,—
omnibus cōpiīs, ingentī exercitū, magnā manū; but usually cum exercitū, cum duābus legiōnibus.
Ablative of Association.
[222A]. The Ablative is often used with verbs of joining, mixing, clinging, exchanging; also with assuēscō, cōnsuēscō, assuēfaciō, and some others to denote association; as,—
improbitās scelere jūncta, badness joined with crime;
āēr calōre admixtus, air mixed with heat;
assuētus labōre, accustomed to (lit. familiarized with) toil;
pācem bellō permūtant, they change peace for (lit. with) war.
Ablative of Degree of Difference.
[223]. The Ablative is used with comparatives and words involving comparison (as post, ante, īnfrā, suprā) to denote the degree of difference; as,—
dimidiō minor, smaller by a half;
tribus pedibus altior, three feet higher;
paulō post, a little afterwards;
quō plurā habēmus, eō cupimus ampliōra, the more we have, the more we want.