Related Clues:

• Like the runt of the litter
• Hardly muscular
• Weak, in a way
• Like a runt
• Lacking energy
• Hardly he-man material
• Listless
• Runtish
• Not so red-blooded?
• Far from robust
• Puny
• Lacking in spirit
• Certainly not brawny
• Weak, in a sense
• Lacking in pizazz