No audible release

Not to be confused with nonexplosive stop.

No audible release
◌̚
Encoding
Entity (decimal)	̚
Unicode (hex)	U+031A

A stop consonant with no audible release, also known as an unreleased stop or checked stop, or less commonly an applosive, unexploded stop or non-exploded stop, is a plosive with no release burst: no audible indication of the end of its occlusion (hold) through the mouth. This commonly occurs with consonants in sequence (such as the /p/ in English "apt") or in some parts of the world (such as Southeast Asia) with any stop at the end of a syllable, though here the remaining air pressure at the end of a word may be released through the nose. In the International Phonetic Alphabet, lack of an audible release is denoted with an upper-right corner diacritic (U+031A ◌̚ COMBINING LEFT ANGLE ABOVE) after the consonant letter, as in: [p̚], [t̚], [k̚], for English apt [ˈæp̚t].

Audibly released stops, on the other hand, are not normally transcribed as such in IPA. If a final stop is aspirated, the aspiration diacritic ⟨◌ʰ⟩ is sufficient to indicate the release: apt [ˈæp̚tʰ]. Otherwise, the "unaspirated" diacritic of the Extended IPA may be employed for this: apt [ˈæp̚t˭].