hardy vs right as rain

hardy

• Impudent. 

• Having rugged physical strength; inured to fatigue or hardships. 

• Able to survive adverse growing conditions. 

• Brave and resolute. 

• Anything, especially a plant, that is hardy. 

• A blacksmith's fuller or chisel, having a square shank for insertion into a square hole in an anvil, called the hardy hole. 

right as rain

• Correct; factually accurate. 

• Very good; all in order; healthy.