Definition of mobile vulgus in English:

mobile vulgus

noun

historical
  • Mobile.

Origin

Late 16th century; earliest use found in William Watson (?1559–1603), Roman Catholic priest and conspirator. From classical Latin mōbile vulgus the changeable common people, the fickle crowd from mōbile, neuter of mōbilis + vulgus.

Pronunciation

mobile vulgus

/ˈməʊbɪleɪ ˈvʌlɡəs/