1. (

• decrepit ,
• debile ,
• feeble ,
• infirm ,
• rickety ,
• sapless ,
• weak ,
• weakly

) lacking bodily or muscular strength or vitality; "a feeble old woman"; "her body looked sapless" ;

2. (

• infirm ,

) lacking firmness of will or character or purpose; "infirm of purpose; give me the daggers" - Shakespeare ;