1. Showing sustained enthusiastic action with unflagging vitality
   - indefatigable, tireless, unflagging

See also: energetic

• Shirley Temple
• Shirley Temple Black
• Shirodkar's operation
• shirr
• shirred egg
• shirring
• shirt
• shirt button
• shirtdress
• shirtfront
• shirting
• shirtless
• shirtlifter
• shirtmaker
• shirtsleeve
• shirtsleeves
• shirttail
• shirtwaist
• shirtwaister
• shirty
• shish kebab
• shisha
• shit
• shit-hot
• shit-scared