§222. Conjunctions

Conjunctions, like prepositions (cf. § 219), are closely related to adverbs, and are either petrified cases of nouns, pronouns, and adjectives, or obscured phrases: as, quod, an old accusative; dum, probably an old accusative (cf. tum, cum); vērō, an old neuter ablative of vērus; nihilōminus, none the less; proinde, lit. forward from there. Most conjunctions are connected with pronominal adverbs, which cannot always be referred to their original case-forms.