Every word in English has vowels though some argue that words like sky do not have a vowel. The letter Y is an issue of is it a vowel or is it not a vowel. The reason why there is a vowel in every word is because having too many consonant sounds in a row is very difficult for English speakers to say. An example of this would be strengths. This is one word that has five consonants in a row, but not every letter is pronounced which is why it isn’t too hard for English speakers to pronounce. For this very reason there are very few words in English that have more than one consonant in a row. Yet, languages like Polish have much longer strings of consonants but still have vowels.
There is another Issue to consider with saying that every word has a vowel. Some argue that hmm, shh, psst, ect., are words while some disagree. If those are considered words then there are words without vowels. But if they are words then this whole post and research is useless and there are words in English that do not have vowels. Those are not hard to say but sometimes if you say them when talking to people a little awkward or weird because it’s not something, at least for me, that is said often. I tend to bump people to get attention or say their name, when I shush people I tell them to be quiet, and when I think I pause I don't make many sounds I just look off at nothing.
Some other facts that I find interesting, about languages that are from my sources. The language with the largest Alphabet is Khmer, the shortest is Rotokas, which is also the language with the fewest sounds, and fewest consonant sounds with having only 6. The one with the most sounds is !Xóõ. English is the most widely published language. Final fact is that the language with the most consonant sounds is Ubyx with 81 consonants.
Is Y a vowel?
Are things like hmm, shh, and psst words?