paroxysm /parˈok-si-zm/

1. A fit of acute pain
2. A sudden recurrence of symptoms
3. A fit of passion, laughter, coughing, etc
4. Any sudden violent action

paroxysˈmal adjective

• involve
• involved
• involvement
• involvements
• involves
• involving
• invulnerabilities
• invulnerability
• invulnerable
• invulnerableness
• invulnerably
• invultuation
• invultuations
• inwall
• inwalled
• inwalling
• inwalls
• inward
• inward investment
• inwardly
• inwardness
• inwardnesses
• inwards
• in waste
• in weal and woe