Mostly concentrated in Guam, the Chamorro language presents critical considerations for speech-language pathologists working with Pacific Islander populations. Chamorro, also known as CHamoru or Fino’ CHamoru, belongs to the Austronesian language family, specifically the Western Malayo-Polynesian branch. It shares linguistic connections with languages such as Tagalog, Malay, and Indonesian. This classification makes Chamorro speech and language development particularly important for clinicians to understand when working with young Chamorro speakers because its phonological patterns and grammatical structures differ significantly from English. The language has undergone profound changes from the old Chamorro (paleo-Chamorro) to modern Chamorro (neo-Chamorro) a process that began in the 17th century and ended in the early 20th century. It is important to note that Chamorro is a language, ethnicity, and cultural group.

Chamorro is spoken by over 47,000 speakers, with around 35,000 people on Guam and around 12,000 in the Northern Mariana Islands. The Chamorro language is threatened with a drop in language use, making it an endangered language despite its official status in Guam. The Chamorro diaspora has created significant communities throughout the mainland United States, with approximately 147,798 Chamorro residing in the U.S. as of 2010, representing a nearly 60% increase between census periods.

This article provides information to help educators, reading specialists, and speech-language pathologists treat Chamorro speakers in an accurate, culturally sensitive way.

Chamorro Speech and Language Development map

Interesting Facts About Chamoru / Chamorro Speech and Language Development

  • Chamorro’s written form is relatively new, with standardization efforts emerging only in the last fifty years.
  • Contemporary Chamorro numbers are derived from Spanish, sounding similar but spelled differently.
  • Spanish borrowed words were adapted to fit Chamorro linguistic patterns. For example, Spanish “boca” (mouth) became Chamorro “boka” meaning “food” or “to eat.”
  • When the U.S. took control of Guam, there was a suppression of the native language in favor of English.

Chamorro Speech and Language Development

Chamorro Consonants in Comparison to English

Chamorro Consonants Not Shared with English/c/ /ɟ/ (palatal stops) · /ɲ/ (palatal nasal) · /ʃ/ & /ʒ/ appear as loans · /x/ /ɣ/ (velar fricatives) · /ʋ/ (labiodental approximant) · /ʎ/ /ʟ/ (laterals) · /ɰ/ (velar approximant) · /ʔ/ (glottal stop)
Consonants Shared With English/p/ /b/ /t/ /d/ /k/ /g/ /f/ /v/ /s/ /z/ /h/ /m/ /n/ /ŋ/ /j/ /l/ /w/ /ɾ/
English Consonants Not Shared with Chamorro/ʃ/ /ʒ/ /tʃ/ /dʒ/ · /ð/ · /θ/ · /ɹ/

Chamorro Vowels in Comparison to English

Chamorro Vowels Not Shared with EnglishNone
Vowels Shared With English/i/ /e/ /æ/ /ɑ/ /o/ /u/
English Vowels Not Shared with Chamorro/ɚ/ /ɔ/ /ʌ/ /ʊ/ /ɛ/ /I/ /ə/

Notes on Chamorro Phonology

  • Consonants: Chamorro includes palatal stops (/c, ɟ/) and nasals (/ɲ/), velar fricatives (/x, ɣ/), a glottal stop (/ʔ/), and laterals (/ʎ, ʟ/), not found in English. English affricates (/tʃ, dʒ/) and fricatives (/θ, ð/), as well as the rhotic /ɹ/, differ from native Chamorro consonants.
  • Vowels: Chamorro has six vowels (/a, æ, e, i, o, u/) which overlap with English but lacks English-only vowels such as /ɚ, ɔ, ʌ, ʊ, ɛ, I, ə/.
  • Clinical Implications: Children may produce palatal sounds or glottal stops typically, but might have difficulty with English-only vowels (/ə/, /ɚ/) and consonants (/ð/, /θ/, /ɹ/). Awareness supports accurate assessment and goal setting.

The Use of Phonotactic Constraints in Chamorro Speakers

  1. Syllable Structure – (C)V(C)
    Native Chamorro morphemes typically follow a (C)V(C) pattern. Closed syllables occur but are limited; GC and CCV(C) patterns only appear in loanwords (e.g., klåsi “class”).
  2. Restrictions on Consonant Clusters
    • Initial clusters are largely disallowed in native words. They only occur in loanwords and are limited to CCV (e.g., klåsi).
    • Final clusters (e.g., tk#, kp) are phonotactically violated, as evidenced by historical changes and marked avoidance of such sequences linguistics.stonybrook.edu.
  3. Vowel Alternations—Raising/Lowering Rules
    • Unstressed mid vowels in closed syllables are raised to high vowels, while stressed closed syllables lower high vowels—for example, gékpugiku “my flyer.”
    • These alternations ensure mid vowels appear only in closed stressed syllables, effectively avoiding mid vowels in unstressed or open contexts.
  4. Stress-Driven Umlaut and Licensing
    • Umlaut occurs under prefixation and in pretonic syllables to comply with the License‑Pretonic constraint, which regulates vowel frontness in syllables immediately before primary stress.
  5. Edge/Interior Asymmetry
    • Chamorro exhibits stricter phonotactic constraints at word edges compared to syllable-internal positions: initial and final edges disallow certain consonant combinations—even if they could appear medially.

Considerations for SLPs and Teachers

  • Loan adaptation: English words starting with consonant clusters (e.g., street) may be simplified (e.g., sitret) to match Chamorro structure.
  • Vowel production: English mid vowels in unstressed positions (e.g., /ɛ/, /ɔ/) may shift toward high vowels (e.g., /i/, /u/).
  • Proficiency use: Stress cues may drive vowel raising on English loanwords when incorporating them into Chamorro, affecting learner speech patterns.

Language Specific Differences Between English and Chamorro

Chamorro and English differ in several ways that are important for speech-language pathologists working with bilingual children. Chamorro primarily uses verb–subject–object (VSO) structure but also employs subject–verb–object (SVO), whereas English is consistently SVO. In Chamorro, adjectives and possessors follow the noun and are linked by particles like “na” and classifiers such as naʼ for food-related items. Chamorro does not use English-style articles (“a,” “the”); instead, definiteness is expressed via particles (i, ni, nu) and demonstratives, and indefinite references rely on context . Verbs are not inflected for person or number; tense and aspect appear through pre-verbal particles like man- (plural), bai, and hu, rather than English -ed or auxiliary verbs. Finally, Chamorro pronouns are gender-neutral, and plural is indicated by markers like “siha” or through interaction with particles, contrasting with English’s gendered and inflectional pronouns.

Language FeaturesChamorroEnglish
Sentence Word OrderVSO (primary); SVO sometimes usedSVO
Adjectives/Noun ModifiersAdjective follows noun, linked by na (e.g., gumaʼ na håyu “big house”)Adjective precedes noun
PossessivesPossessive noun + particle (naʼ + pronoun suffix) e.g., naʼ-ñaPossessor + ’s
Possessive PronounsSuffixes on naʼ or nouns (‑hu, ‑mu, ‑ña)my, your, his
Verb InflectionNo person/number inflection; uses markers like man-, bai, huVerbs inflect for tense/person
PronounsIndependent, gender-neutral pronouns (e.g., guåhu, hugua’)he, she, it
Pronoun GenderNo gender distinctionhe, she, it
Subjects of SentencesExplicit via pronouns; no verb agreementExplicit with agreement
Regular Past TensePre-verbal plural marker man- used; no -ed formverb + -ed
Irregular Past TenseNo irregular forms; same pattern as regularIrregular verbs
NegativesPre-verbal negator (ti, tai)“not” as auxiliary
Double NegativesAcceptable in colloquial use (no prescriptive ban)Dialectal use
Question FormationNo inversion; intonation or question words in placeAuxiliary inversion
Definite ArticlesParticles i, ni, nu mark definiteness“the”
Indefinite ArticlesNone; rely on context or number“a,” “an”
PrepositionsMany from Spanish (gi, giya, as, para), plus native post-verbsin, on, at
Present Progressive Verb FormNot marked; uses simple form or contextverb + -ing
Modal VerbsExpressed by particles like bai, man-can, will, must
Copula/”To Be” VerbsNo separate copula; verbs function as state markersis, are, am
Auxiliary VerbsMinimal; aspect expressed with particlesdo, have, be
Passive VoiceVery rare; use active rephrasingbe + past participle
Direct Object PronounsSame as subject pronouns; no separate formsme, him, her
ConjunctionsUse an (and), pero (but), ya (and/so)and, but, or
PluralsMarked by siha, man- prefix for verbsnoun + -s

Additional Austronesian Languages

This is just one of over ten Austronesian languages that we have documented in the World Language Library. Click below to explore languages spanning the Philippines, Pacific Islands, and Southeast Asia.

Tagalog/FilipinoIlocano (Ilocos region, Philippines)Malay
IndonesianChamorro (Guam)Palauan (Micronesia)
MāoriHawaiianSamoan
ChuukeseMarshallesePohnpeian
Vietnamese

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“Chamorro Language (CHA) – L1 & L2 Speakers, Status, Map, Endangered Level & Official Use.” Ethnologue Free. Accessed 12 June 2025.

“Chamorro Numbers.” Guampedia. Accessed 19 June 2025.

“Chamorro Orthography.” Guampedia, 28 May 2024. Accessed 19 June 2025.

“Chamorro People.” Wikipedia, 3 weeks ago. Accessed 19 June 2025.

“Chamorro phonology.” Berikium33 Wiki, Fandom, accessed July 2025.

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“Language Chamorro.” Grambank, accessed July 2025.

Lujan, Schyuler. “Describing Things in Chamorro, Part 1: Noun‑Noun Descriptions.” Lengguahi‑ta, 28 Jan. 2025.

Lujan, Schyuler. “Possessing Food in Chamorro – ‘My Breadfruit’.” Lengguahi‑ta, 5 Aug. 2024.

“Origin of Guam’s Indigenous People.” Guampedia, 1 July 2024. Accessed 19 June 2025.

Powered by Kaplan, A. “Stress is the Trigger of Chamorro Umlaut.” University of Utah Linguistics Working Papers, U of Utah, 20‑?.

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