Lewis Short
(adjective) : vultŭōsus (volt-), a, um, vultus
* Of an expressive countenance, full of expression, full of airs or grimaces, grimacing, affected: homo, Prud. στεφ. 10, 171: frons,App. M. 3, p. 135, 9: ne quid ineptum aut vultuosum sit (in oratione),Cic. Or. 18, 60; cf. pronuntiatio,Quint. 11, 3, 183.
Charlton T. Lewis, Charles Short, A Latin Dictionary