evenlylevelflatflushas flat as a pancakehorizontallysteadilyfrictionlesslyfluidlyfluentlywithout bumpingwithout jerkingquietlyregularlyrhythmicallywithout a hitchlike clockworkwith no troublewithout difficultyeasilyeffortlesslyas planned(according) to planswimminglysatisfactorilyvery wellsuavelyurbanelycalmlyevenlyplacidlygliblypersuasivelyslicklyingratiatinglyunctuouslyinformal:like a dreamlike magicrare:oililyinformal:smarmily