Related by context. Frequent words. (Click for all words.) 54 extinct 41 passé 40 dinosaur 40 extinction 39 dinosaurs 38 oblivion 37 berserk 37 vogue 37 caveman 36 haywire 36 gaga 36 horribly wrong 35 lemmings 35 poof 35 anachronism 34 disappearing 34 obsolete 34 advent 33 bye bye 33 they're 33 passe 33 hey 33 disappear 33 vanishing 33 bankrupt 32 behemoths 32 gangbusters 32 dying breed 32 reborn 32 yore 32 morph 31 ubiquitous 31 scrap heap 31 fad 31 awry 30 amok 30 Yay 30 morphing 30 lumbering 30 eons 30 roadkill 30 newfangled 30 Wait minute 30 quaint 30 roost 30 old fashioned 30 vanish 30 outmoded 30 hibernation 29 warp speed 29 like 29 venerable 29 screeching halt 29 obsolescence 29 proverbial 29 olden days 29 lizard 29 bonkers 29 everywhere 29 universally accepted 29 mammal 29 damned 29 carnivorous 29 fangled 29 fads 29 doomsayers 29 alas 29 revolutionized 28 anymore 28 opposite direction 28 remnant 28 primitive 28 subspecies 28 Endangered 28 indistinguishable 28 hmmm 28 resemble 28 dawning 28 goddamn 28 forever 28 irrelevance 28 death knell 28 squawking 28 wags 28 swimmingly 28 Holy cow 28 typewriters 28 relic 28 decimate 28 ape 28 proliferate 28 bam 28 whimper 28 reintroduced 28 hobo 27 batty 27 opposite directions 27 evolve 27 fossilized 27 Or 27 evolved