What is adjacent letter?

Answer 1

An adjacent letter is the letter that follows another letter. For example, the adjacent letter to "A" is "B." Some examples of words using adjacent letters are "deaf," "clef" and "cab."

Answer 2

Ah, adjacent letters are simply letters that come next to each other in the alphabet. Just like friends walking side by side on a beautiful nature trail, these letters are always close and ready to support each other. So, whether it's "A" and "B" or "X" and "Y," adjacent letters are always there to keep each other company.