WordNet (r) 3.0 (2006):

tide over
    v 1: suffice for a period between two points; "This money will
         keep us going for another year" [syn: tide over, bridge
         over, keep going]

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "tide over":
   abide, be safe, bide, carry on, come through, continue,
   continue to be, defeat time, defy time, dwell, endure, exist,
   extend, go on, hold, hold on, hold out, keep, keep on, keep safe,
   last, last long, last out, live, live on, live through, maintain,
   perdure, perennate, persist, prevail, remain, ride out, run,
   run on, stand, stay, stay on, subsist, survive, sustain, tarry,
   wear, wear well, weather, weather the storm