shifty
ˈʃɪfti/Submit
adjectiveinformal
1.
(of a person or their manner) appearing deceitful or evasive.
"he had a shifty look about him"
synonyms: devious, evasive, slippery, duplicitous, false, deceitful, underhand, untrustworthy, double-dealing, two-faced, Janus-faced, dishonest, shady, wily, crafty, cunning, tricky, sneaky, furtive, treacherous, artful, sly, scheming, contriving; More
2.
constantly changing; shifting.
"it was a close race in a shifty wind on smooth water"