1. Lacking a steady rhythm
   "an arrhythmic heartbeat"
   - jerking, jerky 
2. Without regard for rhythm
   - arrhythmical

See also: arrhythmia, unrhythmic, unrhythmical, unsteady

• sthenic
• Stheno
• stibine
• stibnite
• Stichaeidae
• Sticherus
• Sticherus flabellatus
• stichomancy
• stichomythia
• stick
• stick about
• stick around
• stick by
• stick cinnamon
• stick figure
• stick horse
• stick in
• stick insect
• stick it out
• stick lac
• stick out
• stick shift
• stick to
• stick together
• stick with