absolute arrant articulated bare barren bland blank bleached boring catenated ceaseless characterless classical clear complete concatenated connected constant consummate continual continued continuing continuous crass cyclical decided definitive devoid direct downright drab egregious empty endless featureless flagrant gapless glaring gray gross hollow humdrum immediate inane incessant insipid interminable intolerable joined jointless linked monotonous never-ending nonstop null null and void out-and-out outright perennial perfect periodic positive precious profound pronounced proper rank recurrent regular repetitive round-the-clock running same samely seamless serried shattering shocking smooth stable stark stark-staring steady straight superlative surpassing tedious the veriest thorough thoroughgoing total twenty-four-hour unbearable unbroken unceasing unconscionable undeniable undifferentiated unending unequivocal uniform unintermitted unintermittent unintermitting uninterrupted unmitigated unqualified unremitting unspoiled unstopped utter vacant vacuous void white with nothing inside without content