portentous(redirected from portentously)
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portentous(Eliciting amazement), adjective amazing, astonishing, breathtaking, exceptional, extraordinary, great, inconceivable, incredible, indescribable, marvelous, miraculous, notable, noteworthy, novel, out of the orrinary, outstanding, phenomenal, prodigal, prodigious, rare, remarkable, shocking, singular, staggering, startling, stirring, striking, stupendous, superb, superlative, surprising, tremendous, uncustomary, unexampled, unheard of, unique, unparalleled, unprecedented, unusual, wonderful, wondrous
portentous(Ominous), adjective alarming, augural, augurous, baleful, black, bodeful, boding, cautionary, dark, dire, direful, divinatory, doomful, dread, dreadful, dreary, fateful, fatiloquent, fearful, forbidding, foreboding, forewarning, forthcoming, frightening, frightful, gloomy, grim, haunting, heralding, ill-boding, ill-fated, inauspicious, indicative, intimidating, mantic, minacious, minatorial, minatory, monitory, ominous, oracular, perilous, portending evil, premonitive, presageful, presaging, presentient, prophetic, prophetical, pythonic, sibylline, sinister, somber, suggestive, threatening, unpropitious
See also: dire, imminent, important, ominous, oracular, presageful, prophetic, unusual