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Lingua sistemfrater

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Lingua sistemfrater
Created byPham Xuan Thai
Setting and usageInternational auxiliary language
SourcesA posteriori language with a predominantly Romance vocabulary and an Asian-based grammar
Language codes
ISO 639-3None (mis)

Lingua sistemfrater (English: Language of Brotherhood), also referred to as Frater, is an a posteriori international auxiliary language created by Vietnamese translator Phạm Xuân Thái[1] in 1957 as Frater (Lingua sistemfrater): The simplest International Language Ever Constructed. The language uses a largely Greco-Latin lexicon,[2] and an Asian-influenced grammar.[3]

Frater was one of the (comparatively rare)[4] international languages created in Asia,[5] and had a vocabulary of more than 6,000 words.[citation needed]

Phonology and Orthography[edit]

Frater used an orthography of eighteen letter from the Latin script: five vowels: a, e, i, o, u, and thirteen consonants: b, d, f, g, j, k, l, m, n, p, r, s, and t. These letters were enunciated as their pronunciations in the International Phonetic Alphabet, with the following exceptions:

  • ⟨j⟩ is pronounced as [z];
  • The letters ⟨e⟩ and ⟨o⟩ are pronounced as the diphthong "ei", and "ou" respectively..

The stress is placed on the last syllable of the word; there are no silent letters.[citation needed]



There is no indefinite article or definite article.

Personal Pronouns[edit]

Singular Plural
first second third first second third
English I you he she it we you they
Frater mi ni ili mis nis ilis

Possessives are formed by adding the preposition ot before the pronoun. Unlike English that distinguishes three genders for the third-person singular pronoun, the pronoun was invariable.


The noun in Frater is invariable. Plurals can be formed by adding -multi (many) to the end of the noun:

mensa (table) - mensamulti (tables)


The adjective in Frater is invariable and is always placed after the noun; except for cardinal numbers.

Frater English
Comparative of superiority plus more than
Comparative of inferiority plusne less than
Comparative of equality je as...as
Absolute superlative tele very
Superlative of superiority plasuni the most
Superlative of inferiority plasunine the least


The cardinal numbers in Frater:

1 - uni 2 - bi 3 - tri 4 - kuadri 5 - kuinti 6 - ses 7 - sep 8 - okta 9 - nona 10 - deka

11 - dekauni 12 - dekabi 13 - dekatri

20 - bideka 24 - bidekakuadri

30 - trideka 40 - kuadrideka

85 - oktadekakuinti

100 - senti 367 - trisenti-sesdeka-sep 600 - sessenti

1000 - mil 1000000 - milion

Ordinal numbers are formed by placing the cardinal number after the noun.


The verb in Frater is invariable in person and in number.

Grammatical form Frater English
Infinitive ide to think
Present Mi ide I think
Past Ni ide pas You thought
Future Ili ide futur He/she/it will think
Imperative Ide! Think!
Conditional Mis ide probable We would think

The passive voice is formed by adding the auxiliary verb es before the infinitive: Ilis es trauma (they are wounded).


The syntax in Frater is: Subject - Verb - Object.

Questions are formed by placing the verb before the subject.

Interrogative words include: antropkia (who), kia (what), plaskia (where), temkia (when), prokia (why), kak (how), and multikia (how much; how many).


The Lord's Prayer[edit]

For comparison the Lord's Prayer is provided in Frater, Glosa (a later auxiliary language with isolating grammar and Greco-Latin vocabulary), Latin and English.


Pater mis in sel,
nam ni es santa,
nasionroi ni aribe,
desir ni es fakto,
sur geo omo sin sel.
Don mis jurdis pani jur mis.
Perdon erormulti mis,
omo mis perdon filone mis.
Ne direk mis a proba,
e libere mis ot benne.


Na patri in urani:
na volu; tu nomina gene honora,
tu krati veni e
tu tende gene akti
epi geo homo in urani.
Place don a na nu-di na di-pani
e tu pardo na plu Mali akti;
metri na pardo mu; qi akti Mali a na.
E ne direkti na a u proba;
sed libe na ab Mali.
Ka tu tena u krati, u dina
e un eufamo pan tem.

Latin (Roman Missal)[6]

Pater noster qui es in caelis
sanctificetur nomen tuum
adveniat regnum tuum
fiat voluntas tua sicut
in caelo et in terra
Panem nostrum cotidianum da nobis hodie
et dimitte nobis debita nostra
sicut et nos dimittimus debitoribus nostris
et ne nos inducas in tentationem
sed libera nos a malo

English (1662 Anglican BCP)[7]

Our Father, which art in heaven,
Hallowed be thy Name;
Thy kingdom come;
Thy will be done
in earth, as it is in heaven:
Give us this day our daily bread;
And forgive us our trespasses,
as we forgive them that trespass against us;
And lead us not into temptation,
But deliver us from evil;
[Doxology: ]For thine is the kingdom,
and the power, and the glory,
For ever and ever.


  1. ^ Kupsala, Risto. "Yleismaailmallinen kieli". www.kupsala.net (in Finnish). Retrieved 2 July 2023.
  2. ^ Barlett, Paul (30 March 1996). "Frater: an IAL from Vietnam". Conlang-L (Mailing list).
  3. ^ "Votre langue est-elle prête à faire la révolution ?". Stylist.fr (in French). Retrieved 2 July 2023.
  4. ^ Yaguello, Marina (2006). Les langues imaginaires: mythes, utopies, fantasmes, chimères et fictions linguistiques. La couleur des idées. Paris: Éditions du Seuil. p. 119. ISBN 978-2-02-082364-7.
  5. ^ Lamotte, Virginie (23 April 2007). "Des langues construites... pour mieux communiquer". Nouvelle Europe (in French). Retrieved 2 July 2023.
  6. ^ 2002 edition; 1962 edition, pp. 312−313
  7. ^ "The Order for Morning Prayer". The Church of England's website. Retrieved 29 September 2020.


  • Thái, Phạm Xuân (1957). Frater (Lingua sistemfrater). The simplest International Language Ever Constructed. Saigon: TU-HAI.

External links[edit]