1. Lacking courage or vitality
   "he was a yellow gutless worm" 
2. Weak in willpower, courage or vitality
   - namby-pamby, spineless, wishy-washy

See also: gutlessness, weak

Antonym: gutsy

• spirogram
• spirograph
• spirogyra
• spirometer
• spirometry
• spironolactone
• spirt
• spirula
• Spirula peronii
• Spirulidae
• spirulina
• spiry
• spit
• spit and polish
• spit curl
• spit out
• spit up
• spital
• spitball
• spitchcock
• spite
• spiteful
• spitefully
• spitefulness
• spitfire