Question

Bour word in which letter silent

Answer 1

The silent K: You need to know. The 'k' in English is traditionally a hard-sounding vowel 'cah' or 'kah', especially when it's at the end of a word: back, for instance. However, when the letter 'k' precedes the letter 'n' at the start of a word, it falls silent; such as 'know'.