1. lacking muscle; having little or no muscular strength or development

Examples

• The muscleless teenager struggled to lift the heavy box.
• After weeks of illness, he felt weak and muscleless.
• She was determined to transform her muscleless frame through consistent exercise.
• The muscleless character in the film was often the target of bullies.
• His muscleless arms made it difficult to perform the physical labor required for the job.