The definition of tricky is something that must be done carefully with great skill, or someone who is known to be deceitful.
Not trustworthy; elusive or tricky:
The definition of shady is providing darkness and coolness from the sun, or of questionable character.
Subtly deceitful; sly; cunning; artful
Sly; tricky; cunning
The definition of trustworthy is someone who is honest who can be entrusted with your secrets or with anything else of importance.
Clearly manifest; evident:
Find another word for shiftier. In this page you can discover 10 synonyms, antonyms, idiomatic expressions, and related words for shiftier, like: trickier, sneakier, slyer, slipperier, shadier, craftier, cagier, slicker, trustworthier and franker.