No audible release
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.