Definitions: (1) making do with the tools and materials at hand <usually filling an unforeseen and immediate need>; (2) spontaneously creative

Derivation: Latin, “to see beforehand and prepare for the future”

• Spontaneity, the hallmark of childhood, is well worth cultivating to counteract the rigidity that may otherwise set in as we grow older. — Gail Sheehy (1936–2020) American author & lecturer
The great majority of people are calm, resourceful, altruistic – or even beyond altruistic, as they risk themselves for others. We improvise the conditions of survival beautifully. — Rebecca Solnit (1961-) American writer