Synonyms for Shifty (same or very similar meaning)
WordNet sense 1 (characterized by insincerity or deceit; evasive):
devious
WordNet sense 2 (not worthy of trust or belief):
untrustworthy, untrusty
WordNet sense 3 (changing position or direction):
shifting
WordNet sense 4 (subject to change or variation):
unsteady
From the ODE community, based on WordNet
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