U+031E "̞" Combining down Tack Below Unicode Character

U+031E "̞" Combining down Tack Below is a diacritical mark used in phonetic transcription, primarily within the International Phonetic Alphabet, to indicate a lowered or more open articulation of a base letter, such as a vowel or consonant. It appears as a small horizontal line with a downward pointing stem placed directly beneath the character it modifies, altering the sound’s quality without changing the main symbol itself. This combining mark is often applied to symbols like e̞ or o̞ to denote mid-centralized or opened vowels in linguistic analysis and language documentation.