Which letter of the English Alphabet is used the least?

The said the least USED, not the least used First letter. While there are more words that start with Z than X, letter X form part of more words than the letter Z. Consider all the 'ex' words for example.

Herbert S. Zim, in his classic introductory cryptography text "Codes and Secret Writing", gives the English letter frequency sequence as "ETAON RISHD LFCMU GYPWB VKJXQ Z", the most common letter pairs as "TH HE AN RE ER IN ON AT ND ST ES EN OF TE ED OR TI HI AS TO", and the most common doubled letters as "LL EE SS OO TT FF RR NN PP CC

Jeanne Reyes SPOT ON!

Many people believe that America and English speak English. The majority of the words spoken in American English are the same as in UK English, but many are different, eg bathroom in England is only the room where we take a bath or shower and does not always have a toilet, in America Bathroom in the room where the toilet is. In some parts of the Americas Restroom is what in the Uk we call the toilet. In the Uk we have kitchen work tops, in America they have kitchen counters. In the Uk we walk along the footpath to go the the shop for crisps, in America they walk the sidewalk to go the the store for chips. In the Uk you can buy fish and chips from the fish and chip shop, in America you buy fries from the store. A woman in the Uk takes her purse out of her handbag to pay for her shopping, in America she will take her wallet from the purse to pay for her groceries. There are many other examples of differerences between American and UK English, all of which are right in their respective countries

I taught remedial reading for 16 years which included writing as well so I knew this question.

deborahpmercer, As a Scrabble player, I'm surprised you didn't go for Z instead of X. You get more points.

Flavio, Is ç symbol in our alphabet? I think not.

I thought it was X

There's one only word in English that uses 'ç': façade.

How is H less frequent than S, thought It’s in so many diagraphs

hgeorgia, Nope!

Ismael Cruz, Wrong!

Alan Page, how could z be that high.

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Fun fact there are: 31 Q’s 64 K 44 V 16 J & 24 X On this page after I comment.

Bill Coe, That is 2004 data

Karel Heinz, adequately I don't know if q is less frequency that the frequency of z. When I test it Q is always 3rd J: 0.153% X: 0.15% Q: 0.095% Z: 0.074%

Kevin Coleman, now all sources say z!

Marguerite LaHaye, "ize" is used in america - other countries use "ise"