Voiceless postalveolar affricate

Voiceless postalveolar affricate
IPA Number103 134
Audio sample
Entity (decimal)t​͡​ʃ
Unicode (hex)U+0074 U+0361 U+0283
X-SAMPAtS or t_rS

The voiceless palato-alveolar sibilant affricate or voiceless domed postalveolar sibilant affricate is a type of consonantal sound used in some spoken languages. The sound is transcribed in the International Phonetic Alphabet with ⟨t͡ʃ⟩, ⟨t͜ʃ⟩ or ⟨⟩ (formerly the ligature ⟨ʧ⟩). The alternative commonly used in American tradition is ⟨č⟩. It is familiar to English speakers as the "ch" sound in "chip".

Historically, this sound often derives from a former voiceless velar stop /k/ (as in English church; also in Gulf Arabic, Slavic languages, Indo-Iranian languages and Romance languages), or a voiceless dental stop /t/ by way of palatalization, especially next to a front vowel (as in English nature; also in Amharic, Portuguese, some accents of Egyptian, etc.).

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