Synonyms for Shifting (same or very similar meaning)
WordNet sense 1 (liable to or capable of change):
variableWordNet sense 2 (changing position or direction):
shiftyWordNet sense 3 (subject to change or variation):
unsteadyWordNet sense 4 ((of soil) unstable):
unfirmWordNet sense 5 (not compact or dense in structure or arrangement):
looseWordNet sense 6 (the act of moving from one place to another):
shiftFrom the ODE community, based on WordNetadd/edit