International Phonetic Alphabet - Diacritics

Diacritics

Diacritics are small markings which are placed around the IPA letter in order to show a certain alteration or more specific description in the letter's pronunciation. Sub-diacritics (markings normally placed below a letter) may be placed above a letter having a descender (informally called a tail), e.g. ŋ̊, ȷ̈.

The dotless i, ⟨ı⟩, is used when the dot would interfere with the diacritic. Other IPA letters may appear as diacritic variants to represent phonetic detail: tˢ (fricative release), bʱ (breathy voice), ˀa (glottal onset), ᵊ (epenthetic schwa), oᶷ (diphthongization). Additional diacritics were introduced in the Extensions to the IPA, which were designed principally for speech pathology.

View the diacritic table as an image
Syllabicity diacritics
◌̩ ɹ̩ n̩ Syllabic ◌̯ e̯ ʊ̯ Non-syllabic
Consonant-release diacritics
◌ʰ Aspirated ◌̚ No audible release
◌ʱ
◌ⁿ dⁿ Nasal release ◌ˡ Lateral release
Phonation diacritics
◌̥ n̥ d̥ Voiceless ◌̬ s̬ t̬ Voiced
◌̤ b̤ a̤ Breathy voiced ◌̰ b̰ a̰ Creaky voiced
Articulation diacritics
◌̪ t̪ d̪ Dental ◌̼ t̼ d̼ Linguolabial
◌̺ t̺ d̺ Apical ◌̻ t̻ d̻ Laminal
◌̟ u̟ t̟ Advanced ◌̠ i̠ t̠ Retracted
◌̈ ë ä Centralized ◌̽ e̽ ɯ̽ Mid-centralized
◌̝ e̝ ɹ̝ Raised (ɹ̝ = voiced alveolar nonsibilant fricative)
◌˔ ˔
◌̞ e̞ β̞ Lowered (β̞ = bilabial approximant)
◌˕ ˕
Co-articulation diacritics
◌̹ ɔ̹ x̹ More rounded ◌̜ ɔ̜ x̜ʷ Less rounded
◌ʷ tʷ dʷ Labialized or labio-velarized ◌ʲ tʲ dʲ Palatalized
◌ˠ tˠ dˠ Velarized ◌ˤ tˤ aˤ Pharyngealized
◌ᶣ tᶣ dᶣ Labio-palatalized ◌̴ ɫ z̴ Velarized or pharyngealized
◌̘ e̘ o̘ Advanced tongue root ◌̙ e̙ o̙ Retracted tongue root
◌̃ ẽ z̃ Nasalized ◌˞ ɚ ɝ Rhotacized
Notes
a^ With aspirated voiced consonants, the aspiration is also voiced. Many linguists prefer one of the diacritics dedicated to breathy voice.
b^ Some linguists restrict this breathy-voice diacritic to sonorants, and transcribe obstruents as bʱ.

The state of the glottis can be finely transcribed with diacritics. A series of alveolar plosives ranging from an open to a closed glottis phonation are:

Open glottis voiceless
breathy voice, also called murmured
slack voice
Sweet spot modal voice
stiff voice
creaky voice
Closed glottis glottal closure

Read more about this topic:  International Phonetic Alphabet