Good hypothesis, but scent has a silent 'c'.
In the word "scent," neither the s nor the c is silent. Both letters contribute to the pronunciation of the word.
The C
The C
The letter "c" is silent in the word "scent."
c sounds like sent
The word "island" has a silent "s."
Which letter is silent in the word debris? The "s" is not pronounced.
Which letter is silent in the word debris? The "s" is not pronounced.
In the word "horn," the letter "h" is silent.
The 's' ending the word Illinois is a silent 's'.
The letter p in the word cupboard is silent
There is one silent letter in the word "debris," which is the letter 's'.