Related by context. Frequent words. (Click for all words.) 77 occurring 75 occurs 66 happen 65 occurred 63 arise 53 occurrence 51 happens 50 involve 47 persist 47 affect 46 entail 45 arises 44 exist 43 worsen 43 happening 43 materialize 43 anticipate 42 suffer 42 trigger 42 unavoidable 41 incur 41 happened 41 foresee 41 result 41 decreases 40 constitute 40 begin 40 disappear 40 triggers 39 cause 39 initiate 39 commonplace 39 require 39 unforeseen 39 adversely affect 38 unfold 38 vary 38 escalate 38 mean 38 uncommon 38 inevitable 38 commence 38 subsequent 37 prompt 37 susceptible 37 linger 37 triggered 37 resulting 37 prevalent 37 sometime 36 exceed 36 decrease 36 diminish 36 prevent 36 lasts 36 catastrophic 36 anticipates 35 come 35 caused 35 deteriorate 35 preventable 35 slows 35 abound 35 provoke 34 detected 34 persists 34 possible 34 impacted 34 emerge 34 be 34 causes 34 unheard 34 fatal 34 existed 34 incidence 34 affected 34 large scale 34 closes 34 precursor 33 magnitude 33 affects 33 hinder 33 progresses 33 warranted 33 impede 33 lessen 33 minimize 33 die 33 accelerate 33 observed 33 prone 33 resulted 33 consequence 33 arose 33 spontaneous 33 involves 33 expect 32 arising 32 predict 32 coincide 32 norm