ictus /ikˈtəs/

1. Rhythmical or metrical stress in contradistinction to the usual stress of a word in prose, etc (prosody)
2. A stroke or sudden attack, esp an epileptic fit (medicine)

icˈtal or icˈtic adjective

• undestroyed
• undetectable
• undetected
• undeterminable
• undeterminate
• undeterminateness
• undetermination
• undetermined
• undeterred
• undeveloped
• undeviating
• undeviatingly
• undevout
• undiagnosed
• undid
• undies
• undifferenced
• undifferentiated
• undigested
• undight
• undighting
• undights
• undignified
• undignifies
• undignify