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In English grammatical usage and language aesthetics, split infinitives have often been deprecated or avoided, perceived as incorrect, ambiguous, or at least avoidable. This is despite the ongoing use of some split infinitives in the colloquial speech of various communities of English speakers. In the 19th century, some linguistic prescriptivists sought to categorically disallow split infinitives, and the resulting conflict had considerable cultural importance — accompanied as it was by claims of classism or educational elitism. The construction still renders disagreement, but recent editions of English usage guides have largely dropped their objection to it. (Full article...)

Portal:Language/Selected topic/2 Stuttering, also known as stammering, is a speech disorder characterized externally by involuntary repetitions and prolongations of sounds, syllables, words, or phrases as well as involuntary silent pauses called blocks in which the person who stutters is unable to produce sounds. Almost 80 million people worldwide stutter, about 1% of the world's population, with a prevalence among males at least twice that of females. Persistent stuttering into adulthood often leads to outcomes detrimental to overall mental health, such as social isolation and suicidal thoughts.

Stuttering is not connected to the physical ability to produce phonemes (i.e. it is unrelated to the structure or function of the vocal cords). It is also unconnected to the structuring of thoughts into coherent sentences inside sufferers' brains, meaning that people with a stutter know precisely what they are trying to say (in contrast with alternative disorders like aphasia). Stuttering is purely a neurological disconnect between intent and outcome during the task of expressing each individual sound. While there are rarer neurogenic (e.g. acquired during physical insult) and psychogenic (e.g. acquired after adult-onset mental illness or trauma) variants, the typical etiology, development, and presentation is that of idiopathic stuttering in childhood that then becomes persistent into adulthood. (Full article...)

Portal:Language/Selected topic/3 A vowel (/ˈvaʊ.əl/) is a speech sound pronounced without any stricture in the vocal tract. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, loudness, and length. They are usually voiced and are closely involved in prosodic variation such as tone, intonation and stress. The nucleus, or "center", of a syllable typically consists of a vowel sound (though this is not always the case).

The word vowel comes from the Latin word vocalis, meaning "vocal" (i.e. relating to the voice). In English, the word vowel is commonly used to refer both to vowel sounds and to the written symbols that represent them: ⟨a⟩, ⟨e⟩, ⟨i⟩, ⟨o⟩, ⟨u⟩, and sometimes ⟨y⟩, and ⟨w⟩. (Full article...)

Portal:Language/Selected topic/4 Click consonants, or clicks, are speech sounds that occur as consonants in many languages of Southern Africa and in three languages of East Africa. Examples familiar to English-speakers are the tut-tut (British spelling) or tsk! tsk! (American spelling) used to express disapproval or pity (IPA [ǀ]), the tchick! used to spur on a horse (IPA [ǁ]), and the clip-clop! sound children make with their tongue to imitate a horse trotting (IPA [ǃ]). However, these paralinguistic sounds in English are not full click consonants, as they only involve the front of the tongue, without the release of the back of the tongue that is required for clicks to combine with vowels and form syllables.

Anatomically, clicks are obstruents articulated with two closures (points of contact) in the mouth, one forward and one at the back. The enclosed pocket of air is rarefied by a sucking action of the tongue (in technical terminology, clicks have a lingual ingressive airstream mechanism). The forward closure is then released, producing what may be the loudest consonants in the language, although in some languages such as Hadza and Sandawe, clicks can be more subtle and may even be mistaken for ejectives. The forward closure occurs at one of half a dozen places of articulation. The rear closure may be released simultaneously with the forward closure or after it; it may be silent, affricated or ejective. The consonant as a whole may also be nasalized, voiced, aspirated, glottalized etc. (Full article...)