regular

[1]	habitue , fixture
[2]	fixture , (steady) customer , patron , client , frequenter

adj.

[1]	routine , ordinary , common , everyday , customary , accustomed , wonted , commonplace , normal , usual , traditional , time-honoured , conventional , typical , habitual , natural , familiar , standard , predictable , scheduled , fixed , unvarying , invariable , methodical
[2]	scheduled , routine , systematic , ordered , steady , consistent , rhythmic(al) , automatic , uniform , periodic , cyclic(al) , hourly , daily , weekly , hebdomadal , semi-weekly , biweekly , fortnightly , semi-monthly , monthly , bimonthly , seasonal , quarterly , semi-annual , annual
[3]	symmetrical , uniform , even , even-sided , equal-sided , equilateral , equal-angled , equiangular , harmonious
[4]	undistorted , even , well-proportioned , proportional , symmetrical , classic
[5]	even , smooth , level , straight , uniform , uninterrupted , unvarying , continuous , flat , plane , plumb
[6]	dependable , veritable , methodical , (well-)regulated , (well-)ordered , orderly , proper , correct , legal , official , bona fide , legitimate , established , recognized , orthodox , approved , (Colloq) kosher , OK/okay
[7]	usual , expected , normal , habitual , accustomed , familiar
[8]	acceptable , accepted , estimable , fine , good , likeable , popular , pleasant
[9]	complete , utter , thoroughgoing , unmitigated , unalloyed , unqualified , consummate , perfect , thorough , absolute , well-known , acknowledged
[10]	permanent , even , career
[11]	conventional , steady , usual , common , conformable , ordinary , systematic , (Colloq) (US) ruly
[12]	unconstipated
[13]	even