List of viable synonyms and viable related words.
OK, aboveground, acceptable, achievable, actable, activating, admissible, agreeable, alive, alive and kicking, all right, alright, among the living, animate, animated, animating, animative, applicable, attainable, bracing, breathing, capable of life, compassable, conscious, doable, endowed with life, energizing, enlivened, enlivening, exhilarating, exhilarative, existent, feasible, good enough, in the flesh, inspirited, instinct with life, invigorating, invigorative, live, living, long-lived, manageable, maneuverable, manipulatable, negotiable, of concern, of concernment, of consequence, of interest, of moment, of note, of significance, of weight, okay, operable, operatable, overcomable, passable, performable, possible, practicable, practical, quick, quickening, realizable, reasonable, rousing, sensible, stimulating, stimulative, superable, supportable, surmountable, sustainable, tenable, tenacious of life, tonic, unexceptionable, unobjectionable, very much alive, vital, vitalizing, vivified, workable, zoetic