spurtive

Adjective

 * 1) Occurring in spurts or short bursts.
 * 2) * 2002, Raj Kumar Sen, ‎Biswajit Chatterjee, Indian Economy, Agenda for the 21st Century (page 311)
 * spurtive phenomenon cannot be captured in a simple time trend. Only the ratchet approach can adequately model the spurtive irregularity.