Related by context. Frequent words. (Click for all words.) 43 puzzling 43 explain 42 speculate 39 Whatever 39 why 39 puzzled 38 wonder 38 baffled 38 theories 38 Regardless 38 Of course 37 Never mind 37 mystery 37 baffling 37 curious 37 Not surprisingly 37 unclear 36 perplexed 36 But 36 wondering 36 So 36 inexplicable 36 explanation 36 And 35 Maybe 35 fathom 35 obvious 35 understand 35 Perhaps 35 Or maybe 34 speculating 34 wonders 34 Asked 34 apparent 34 Exactly 34 reason 34 Apparently 34 What 33 explanations 33 Certainly 33 clue 33 know 33 Clearly 33 Which 33 Yet 33 That 32 defies 32 partly 32 explaining 32 wondered 32 cite 32 Because 32 Nor 32 Indeed 32 ponder 32 mysterious 32 knows 31 phenomena 31 Experts 31 There 31 reveal 31 Surprisingly 31 Actually 31 Scientists 31 guess 31 There'sa 31 clues 31 unsure 30 Alas 30 stems 30 surprising 30 blames 30 Speculation 30 Considering 30 debatable 30 Obviously 30 unanswered questions 30 enigmatic 30 tight lipped 30 mysteries 30 disappearance 29 reasons 29 question 29 Those 29 hints 29 Why 29 Unfortunately 29 uncertain 29 understandable 29 Ironically 29 Explaining 29 theory 29 elusive 29 known 29 thinks 29 seem 29 Surely 29 Many 29 Even 29 coy 29 Knowing