The "deaf and dumb alphabet" is a term used to describe the manual alphabet commonly used by individuals who are deaf or hard of hearing to communicate. It is also known as the American Sign Language (ASL) alphabet or manual communication. While the term "deaf and dumb" is considered outdated and offensive, there are alternative terms that can be used such as "sign language alphabet" or "manual alphabet." These terms have become more widely accepted and embrace the diversity and richness of the Deaf culture and community. It is important to use appropriate and respectful language when discussing individuals with disabilities and to always strive for inclusivity and sensitivity.