Uvularization is a secondary articulation of consonants or vowels by which the back of the tongue is constricted toward the uvula and upper pharynx during the articulation of a sound with its primary articulation elsewhere.
A tilde or swung dash through the letter indicates velarization, uvularization or pharyngealization, as in [ɫ] ("dark l"). However, apart from a few pre-composed characters, this diacritic is deprecated by Unicode.
The symbol ⟨ʶ⟩ (a superscript voiced uvular approximant (inverted small capital R)) after the letter standing for the consonant that is uvularized, as in [tʶ] (the uvularized equivalent of [t])
Occurrence
Uvularized consonants are often not distinguished from pharyngealized consonants, and they may be transcribed as if they were pharyngealized.