The near-close central unrounded vowel, or near-high central unrounded vowel, is a vowel sound used in some spoken languages. The International Phonetic Alphabet can represent this sound in a number of ways (see the box on the right), but the most common symbols are ⟨ɪ̈⟩ (centralized[ɪ]) and ⟨ɨ̞⟩ (lowered[ɨ]). In many British dictionaries, this vowel has been transcribed ⟨ɪ⟩, which captures its height; in the American tradition it is more often ⟨ɨ⟩, which captures its centrality, or ⟨ᵻ⟩, which captures both. The third edition of the OED adopted ⟨ᵻ⟩ as a conflation of ⟨ɪ⟩ and ⟨ɨ⟩ to represent either [ɪ̈] or a vowel that varies between [ɪ] and [ə].
The IPA prefers terms "close" and "open" for vowels, and the name of the article follows this. However, a large number of linguists, perhaps a majority in the USA, prefer the terms "high" and "low".