English words without vowels

[2] Another mathematical term without vowel letters is ln, the natural logarithm.

Vowelless proper names from other languages, such as the surname Ng, may retain their original spelling, even if they are pronounced with vowels.

[5] However at that time the form ⟨w⟩ was still sometimes used to represent a digraph ⟨uu⟩ (see W), not as a separate letter.

In modern Welsh, "W" is simply a single letter which often represents a vowel sound.

Thus words borrowed from Welsh may use ⟨w⟩ this way, such as: There are also numerous vowelless interjections and onomatopoeia found more or less frequently, including brr or brrr, bzzt, grrr, hm, hmm, mm, mmm, mhmm, sksksksk,[13][14] pfft, pht, phpht,[7] psst, sh, shh, zzz.