Synonyms for Shady (same or very similar meaning)
WordNet sense 1 (of businesses and businessmen of questionable honesty):
fly-by-night
WordNet sense 2 (not worthy of trust or belief):
untrustworthy, untrusty
WordNet sense 3 (of questionable taste or morality):
louche
WordNet sense 4 (not as expected):
fishy, funny, suspect, suspicious, suspect
WordNet sense 5 (subject to question):
questionable
WordNet sense 6 (filled with shade):
shadowy, umbrageous, shadowed
WordNet sense 7 (protected from heat and light with shade or shadow):
shaded
From the ODE community, based on WordNet
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