◌̟

◌̟ U+031F, ̟ COMBINING PLUS SIGN BELOW ← ◌̞ [U+031E] Combining Diacritical Marks ◌̠ → [U+0320]

◌᫈ U+1AC8, ᫈ COMBINING PLUS SIGN ABOVE ← ◌᫇ [U+1AC7] Combining Diacritical Marks Extended ◌᫉ → [U+1AC9]

◌᫊ U+1ACA, ᫊ COMBINING DOUBLE PLUS SIGN BELOW ← ◌᫉ [U+1AC9] Combining Diacritical Marks Extended ◌᫋ → [U+1ACB]

◌᫉ U+1AC9, ᫉ COMBINING DOUBLE PLUS SIGN ABOVE ← ◌᫈ [U+1AC8] Combining Diacritical Marks Extended ◌᫊ → [U+1ACA]

◌̟

1. (IPA) Indicates advanced articulation.
2. (UPA) Indicates creaky voice.(Can we verify⁽⁺⁾ this sense?)

• (IPA): When the base letter descends past the baseline, the spacing diacritic ⟨˖⟩ or superscript ⟨◌᫈⟩ may be used instead.
• When doubled, the diacritics are placed side-by-side, ⟨◌᫊⟩ (or ⟨◌᫉⟩ with a descender), rather than stacked.

• ⟨˖⟩

• ⟨◌̠⟩

IPA letters with the plus diacritic:

• n̟ ɲ̟ (ɲ᫈) ŋ̟ (ŋ᫈) ɴ̟
• t̟ d̟ c̟ ɟ̟ (ɟ᫈) k̟ ɡ̟ (ɡ᫈) q̟ (q᫈) ɢ̟
• θ̟ ð̟ s̟ z̟ ʃ̟ (ʃ᫈) ʒ̟ (ʒ᫈) ç̟ (ç᫈) ʝ̟ (ʝ᫈) x̟ ɣ̟ (ɣ᫈) χ̟ (χ᫈) ʁ̟
• ⱱ̟ r̟ ɾ̟ ɹ̟ l̟ ɬ̟ ɮ̟ (ɮ᫈) ʎ̟ ʟ̟ ʀ̟