paroxysm (n.)

• access
• apoplexy
• arrest
• attack
• bite
• blaze
• blockage
• breakup
• burst
• cataclysm
• climax
• clonus
• conniption
• convulsion
• cramp
• crick
• cyclone
• diastrophism
• disaster
• eclampsia
• epilepsy
• eruption
• explosion
• fever
• fit
• flare-up
• frenzy
• furor
• fury
• gale
• grip
• griping
• gust
• hitch
• hurricane
• ictus
• irruption
• kink
• laryngospasm
• lockjaw
• nip
• occlusion
• orgasm
• outbreak
• outburst
• overthrow
• pang
• pinch
• prick
• quake
• rage
• seizure
• shoot
• shooting
• spasm
• spell
• stab
• stitch
• stoppage
• storm
• stroke
• tantrum
• temblor
• tempest
• tetanus
• tetany
• thrill
• throe
• throes
• thromboembolism
• thrombosis
• tornado
• trismus
• tsunami
• tweak
• twinge
• twitch
• upheaval
• visitation
• whirlwind
• wrench