However, silent ⟨k⟩ and ⟨g⟩ occur because of apheresis, the dropping of the initial sound of a word. These sounds used to be pronounced in Old and Middle English.
Like many silent letters, the K was not always silent. In Old English, the word knight was once cniht and knot was once cnotta, and the K sound at the beginning used to be pronounced, up until about the 17th century.
It is not conclusively known why this occurred. However, some researchers believe it was due to the influence of Latin and French during this period, as these languages did not include the 'kn' cluster. This resulted in the 'k' being mispronounced or not pronounced and gradually eliminated.
In simple and simple language, K is silent in knowledge only in terms of the rules of English, there is no such thing as rocket science behind it, it is a very simple rule of language. Knowledge is an English word, which means knowledge or information.
Because the word evolved from ancient German and Dutch words in which the K sound was actually spoken. Other related words are knight and knave.
Silent K Words
Rule: K is not pronounced when it comes before an n at the beginning of a word. For example: knee, know, knock.
a/an + H. The rule goes that the article 'a' is used before a consonant and 'an' is used before a vowel, so with silent H we would say “an honest” and with pronounced H we would say “a hotel”.
"Ptero" is Greek for "wing" or "winglike." In English, we don't pronounce the "p" at the beginning, but the Greeks did. Our alphabet is based on the Greek alphabet, but we adapted certain sounds to be more like those we were familiar with. So English speakers took out the "p" sound.
The silent P: Psychology with no receipt
The 'p', usually a popping sound made at the front of the mouth, is silenced when it precedes an 's'. Most of these words with silent 'p's are to do with the mind or the medicine of the mind: Psychology, psychiatry, psyche, psychological, psychotic or pseudo.
That difficult -gh- letter pattern is from the Anglo- Saxons - daughter, night, cough, dough, bright... the -gh- used to be -h- and pronounced like the Scottish loch, a hard sound - until the French invaded and messed around with our spelling and added the g. Then the -gh- became silent or pronounced with a 'f' sound.
As The Independent nicely says it, "Silent Letters are the ghosts of pronunciations past." Older versions of these words had pronounced Ns. Most of them come to English from Latin. For example autumn comes from the Latin autumnus and column comes from the Latin columna. In these words, the N was pronounced.
171: The silent l in the word 'salmon' — Pronuncian: American English Pronunciation.
History. The letter K comes from the Greek letter Κ (kappa), which was taken from the Semitic kaph, the symbol for an open hand.
In English, the K is silent, like in the word KNEE. In German, both the K and the N are pronounced, and the K is hard.
Nobody Pronounces the 'B' in 'Debt'
Exceptions: Most of the words beginning with H are not silent (remember to use the article “a” with voiced H) For example history, history, hair, happy. The letter K is always silent when it precedes the letter N in a word.
w. Again, often silent at the start of words, before the letter 'r' or, in some question words, before the letter 'h' for example wrong, write, and who. There are some common words which have a silent 'w' in the middle of the word, for example, answer and two.
The 'h' in 'ghost' is a historical hiccup. William Caxton, having first practised his trade in Flanders, brought Flemish typesetters back to England to help set up his printing press - they lobbed an 'h' into English 'gost' because their own native word was 'gheest'.
Many students try to pronounce these Ls, but in all these words, the L is completely silent. In walk, chalk, and talk, the L comes after an A, and the vowel is pronounced like a short O. Half and calf have an AL, too, but the vowel is pronounced like the short A in staff.
In English, the 'k' is silent, but all the syllables are pronounced in the German word. These are the hardest words to pronounce in the English language. On top of that, almost every letter in the alphabet has a silent usage, too.
L is also silent in could, should, would, as well as in calf and half, and in chalk, talk, walk, and for many people in calm, palm, and psalm.
Should You Use 'A' or 'An'? So to answer Matt's question, “an hour” is correct, because “hour” starts with a vowel sound. People seem to ask most often about words that start with the letters H and U because sometimes these words start with vowel sounds and sometimes they start with consonant sounds.
If an “L” is found towards the end of the word, before the letters “f,” “v”, “k” and “m,” but after the letter “a,” then it's usually silent (behalf, calve, walk, almond). In many of these instances, the silent L lengthens the previous vowel sound, which gives the slight impression of the “L” /l/ sound.