Well-defined :  adj
1: having a clean and distinct outline as if precisely cut along the edges; "a finely chiseled nose"; "well-defined features" [syn: chiseled]
2: accurately stated or described; "a set of well-defined values" [syn: clear] [ant: ill-defined]

clean-cut, clear, clear as crystal, clear as day, clear-cut, coherent, connected, consistent, conspicuous, crisp, crystal-clear, crystalline, defined, definite, direct, distinct, evident, explicit, express, glaring, in focus, limpid, loud and clear, lucid, luminous, obvious, patent, pellucid, perspicuous, plain, prominent, pronounced, simple, staring, straightforward, translucent, transparent, transpicuous, unambiguous, unconfused, unequivocal, univocal, unmistakable, well-marked, well-pronounced, well-resolved,