However, the IPA convention of doubling diacritics to indicate a greater degree can be used: ⟨ˠˠ⟩.
In some accents of English, such as Received Pronunciation and arguably General American English, the phoneme /l/ has "dark" and "light" allophones: the "dark", velarized allophone [ɫ] appears in syllable coda position (e.g. in full), while the "light", non-velarized allophone [l] appears in syllable onset position (e.g. in lawn).
In Scottish Gaelic the terms are caol (for palatalized) and leathann (for velarized).
The terms light or clear (for non-velarized or palatalized) and dark (for velarized) are also widespread.
The former pair refers to palatalized ("soft" or iotated) and plain ("hard") Slavic consonants.