lettersubstitution
nounUK /ˈlɛtə ˌsʌbstɪˈtjuːʃən/
US /ˈlɛtər ˌsʌbstɪˈtuːʃən/
A letter substitution is when you swap one letter for another in a word.
In the puzzle, the letter substitution turned 'cat' into 'bat'.
RELATED WORDS
OTHER MEANINGS
2. A secret code where each letter stands for a different letter.
The spy used letter substitution to hide the message.
3. A spelling mistake where the wrong letter is typed.
The typo was just a letter substitution in the middle of the word.
4. A rule in a word game that lets you trade one letter for another.
The game's letter substitution rule helped her make a new word.