Wake-up calls are a way to start the day off right. They can come in many forms, such as arousals, alarms, and arousers. Arousals are 8 letter words that refer to the act of waking someone up, usually with a gentle touch or voice. Alarms are 6 letter words that refer to a loud sound or noise used to wake someone up. Arousers are 8 letter words that refer to something that stimulates or encourages someone to wake up. All of these terms are related to the term 'wake-up call' and can be used to help someone start their day.