Tidy
Tidy, as neat as a new pin, well ordered, well kept, immaculate, uncluttered, trim, tricksy, neat and tidy, orderly, in (good) order, in apple-pie order, spick and span, straight, and spruce.
Smart
Smart, dapper, well groomed, besuited, well organized, methodical, natty, spruce, trim, well turned out, organized, tidy, fastidious, and trig.
Well formed
Well formed, precise, clean-cut, well proportioned, unadorned, regular, crisp, elegant, simple, and unornamented.
Skilful
Skilful, dexterous, adept, practised, precise, agile, stylish, clever, inventive, good, efficient, genius, deft, adroit, expert, accurate, nimble, graceful, nifty, ingenious, resourceful, apt, and slick.
Undiluted
Undiluted, unmixed, unblended, uncut, straight, unadulterated, pure, and straight up.
Excellent
Excellent, superb, magnificent, of the highest quality, exceptional, wonderful, perfect, pre-eminent, peerless, first-rate, superior, splendid, worthy, fine, A1, great, tremendous, fab, tip-top, awesome, wicked, out of this world, mind-blowing, brill, champion, badass, on fleek, bonzer, ripping, top-hole, capital, bosker, very good, outstanding, of high quality, of the highest standard, marvellous, sublime, eminent, matchless, supreme, first-class, superlative, admirable, sterling, super, ace, terrific, fantastic, top-notch, class, magic, cool, too good to be true, brilliant, smashing, bosting, awesomesauce, beaut, spiffing, topping, wizard, swell, and applaudable.