Now updated for CSW19. New words, if any, and new inflections of existing words, are shown in red.
| accident | an unexpected or unintentional occurrence. |
| attendment | an attendant circumstance. |
| bechance | (Arch.) to happen by chance. |
| befall | (Arch.) to happen to ) BEFELD, BEFALLEN. |
| befallen | (PaP.) BEFALL, to happen to. |
| befeld | (Spenser) befallen. |
| befortune | (Shakesp.) to befall. |
| behappen | (Spenser) to happen to. |
| betide | to befall, happen to. |
| betime | (Shakesp.) to betide. |
| calamity | a grievous misfortune. |
| casus | (Lat.) an event; an occurrence; a combination of circumstances. |
| cataclysm | a great flood or other major disaster. |
| circumstance | a condition, fact, or event accompanying, conditioning, or determining another; (verb) to place in particular circumstances. |
| contingence | an event (as an emergency) that may but is not certain to occur. |
| contingency | an event (as an emergency) that may but is not certain to occur. |
| eventive | denoting an event. |
| eventualise | to happen, come into being. |
| eventuality | a possible event or outcome. |
| eventualize | to happen, come into being. |
| eventuate | to turn out. |
| eventuation | the act of eventuating. |
| hap | chance (verb) to happen by chance |
| haply | by hap, chance. |
| happen | to occur. |
| happenchance | a circumstance esp that is due to chance. |
| happenstance | a circumstance esp that is due to chance. |
| incident | falling on; (noun) an event. |
| materialise | to appear, become material. |
| misaunter | (Scots) an unlucky chance, a misfortune. |
| mischance | bad luck (verb) to happen amiss |
| mischanceful | (Arch.) full of mischance, unlucky. |
| mischancy | unlucky, happening amiss. |
| mischanter | (Scots) an unlucky chance, a misfortune. |
| misevent | a mishap. |
| misfall | (Obs.) to befall unluckily. |
| mishanter | (Scots) an unlucky chance, a misfortune. |
| mishap | an unlucky happening; (verb, obs.) to happen amiss. |
| mishappen | (Spenser) to happen ill or unluckily. |
| misluck | ill luck; misfortune; (verb) to meet with ill-luck. |
| nonevent | a happening without significance. |
| nonhappening | an event of no importance. |
| obvention | (Obs.) any incidental occurrence or advantage. |
| occasion | a case, instance or time of something happening; (verb) to cause. |
| occur | to take place. |
| occurrence | something that occurs. |
| occurrent | occurring; (noun) an occurrence. |
| perchance | by chance, as it may happen. |
| recur | to happen again. |
| recurrence | the act of recurring. |
| recurrency | the act of recurring. |
| recurringly | (Adv.) RECURRING. |
| reoccur | to happen again. |
| reoccurrence | a repeated occurrence. |
| uneventful | marked by no noteworthy or untoward incidents. |
| worth | value, merit (verb) to be, to happen, as in woe worth the day |