aperiodic /ā-pē-ri-odˈik/

1. Not periodic
2. Highly damped and coming to rest without oscillation (physics)

• shigellas
• shigelloses
• shigellosis
• shih tzu
• shih tzus
• Shiism
• shiitake
• Shiite
• Shiitic
• shikar
• shikaree
• shikarees
• shikari
• shikaris
• shikars
• shiksa
• shiksas
• shikse
• shikses
• shill
• shillaber
• shillabers
• shillalah
• shillalahs
• shilled