Novelistic vivacity, the great unteachable, the unschooled enigma, has a way of making questions of form appear scholastic.

NEWYORKER: Youth in Revolt

Tina Benko, with a potent mixture of vivacity and brittleness, fearlessly and intelligently performs the acerbic, 90-minute monologue.

WSJ: Review: 'Jackie' a sharp-eyed look at an icon

He is the chilling calm to Tennant's vivacity.

BBC: Review: David Tennant in Hamlet

Since no two people experience dementia in the same way, many caregivers are at a loss with how to cope with a disease that can rob the vivacity and obvious connections of loved ones they once knew.

CNN: Building relationships amid memory loss

With this abiding classic of the 1960s, Mr. Truffaut leapfrogged back a generation to join his idol, Jean Renoir, and reasserted the virtues of naturalism and vivacity that had been treated with disdain by French directors of the late 1940s and early 1950s.

WSJ: Jules and Jim | For the Love of a Fickle Woman | Masterpiece by Peter Cowie