pleraque

Etymology 1
A substantivisation of the neuter plural forms of the adjective, in later use functioning as an adverb.

Noun

 * 1) all, every thing
 * 2)  the most, the greatest part

Adverb

 * 1)  mostly, for the most part

Etymology 2
Regularly declined forms of.

Etymology 3
Regularly declined forms of.