Which of the following English words has no silent letter in its pronunciation?

Concept

A silent letter appears in a word’s spelling but contributes no sound in its standard pronunciation. To identify one, compare the written letters with the sounds actually produced; ordinary spelling combinations should not be mistaken for omitted letters.

Application

In “orange,” the written letters participate in the standard pronunciation, so no letter is silent.

Contrast

• In “knock,” the initial k is silent.

• In “honest,” the initial h is silent.

• In “debt,” the b is silent.

Therefore, the word without a silent letter is “orange.”