tricky
1 complicated, delicate, difficult, knotty, problematic, risky, sticky (informal) thorny, ticklish, touch-and-go
2 artful, crafty, cunning, deceitful, deceptive, devious, foxy, scheming, slippery, sly, subtle, wily
1 clear, easy, obvious, simple, straightforward, uncomplicated
2 above board, artless, direct, genuine, honest, ingenuous, open, sincere, truthful