in operation



acting, active, at work, functional, functioning, going, going on, in commission, in effect, in exercise, in force, in hand, in play, in practice, in process,

   Father Time - Methuselah, Nestor, centenarian, dotard, elder, gaffer, geezer, grandfather, greybeard, nonagenarian, octogenarian, old chap, old codger, old dog, old duffer,

   acquaint - accustom, advertise, advertise of, advise, apprise, brief, bring word, clue, communicate, disclose, divulge, do the honours, enlighten, familiarize, fill in,

   unethical - amoral, conscienceless, corrupt, corrupted, criminal, crooked, dark, devious, dishonest, dishonourable, doubtful, dubious, evasive, felonious, fishy,

   number theory - analysis, arithmetic, mathematics, trigonometry ,

   vestments - cloth, clothes, garments, gear, habit, robe, vestment ,

   Arab - Bohemian, beach bum, beachcomber, beggar, bum, bummer, gamin, gamine, guttersnipe, gypsy, homeless waif, idler, loafer, nomad, piker,

   with all speed - PDQ, all out, apace, at once, directly, expeditiously, fast, flat out, forthwith, immediately, in no time, instantly, on the spot, promptly, pronto,

   beat the drums - beat the drum, call up, conscript, levy, mobilize, muster, rally, recruit ,

   out of turn - misplaced, out of keeping, out of line, out of order, out of place, turn ,

   vis vitae - biological clock, biorhythm, blood, breath, heart, heartbeat, life cycle, life force, life principle, lifeblood, soul, spark of life, spirit ,