unproviˈdential,a. (un-1 7, 5 b.) 1813T. Busby Lucretius II. vi. Comm. p. x, Lucretius, reasoning from the unprovidential casualities of thunder, denies that it springs from the hand of Jupiter.1837Lytton Athens I. 21 [He] reclaimed his barbarous subjects from a wandering and unprovidential life.