The definition of shady is providing darkness and coolness from the sun, or of questionable character.
Causing laughter or amusement:
Not likely; improbable; not to be reasonably expected; as, an unlikely event; the thing you mention is very unlikely. Not holding out a prospect of success; likely to fail; unpromising; as, unlikely means.
Genuine and authentic; not artificial or spurious:
Find another word for fishier. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for fishier, like: shadier, funnier, unlikelier, duller, colder, likelier and realer.