How to spell REEIN correctly?

If you meant "rein", here are a few possible correct suggestions for misspelling "reein". Firstly, you could mean "reign", referring to a period of ruling by a monarch. Alternatively, "rain" is precipitation falling from the sky. Lastly, "rein" is a strap used to control a horse.

• Rein I need to rein in my spending habits so that I can save money for a down payment on a house.
• Renin Renin is primarily produced and released by the juxtaglomerular cells of the kidney.
• Resin The furniture is made of a durable resin material.

Attenttion

• attention
• attentions
• attenuation
• inattention