Ido Ido () is a constructed language derived from Reformed Esperanto, and similarly designed with the goal of being a universal second language for people of diverse backgrounds. To function as an effective ''international auxiliary language'', I ...

and

Interlingua Interlingua (; ISO 639 language codes ia, ina) is an international auxiliary language (IAL) developed between 1937 and 1951 by the American International Auxiliary Language Association (IALA). It ranks among the most widely used IALs and is t ...

are two

constructed language A constructed language (sometimes called a conlang) is a language whose phonology, grammar, and vocabulary, instead of having developed naturally, are consciously devised for some purpose, which may include being devised for a work of fiction. ...

s created in the 20th century, Ido circa 1910 and Interlingua circa 1940. Both have had some measure of success, but Interlingua has enjoyed greater diffusion and acceptance by public and private institutions—it is taught in many high schools and universities, for example. Ido was developed by a small committee from

Reformed Esperanto Reformed Esperanto, or Esperanto 1894, is a constructed language derived from Esperanto (i.e., an ''Esperantido''), created by the original creator of Esperanto. It is notable as the only complete Esperantido by L. L. Zamenhof. Pressured to addre ...

, whereas Interlingua was developed from scratch by an American organization, the IALA. Ido is what is called ''schematic'' (easier to learn for speakers of very different languages), whereas Interlingua is what is called ''naturalistic'' (easier to understand for speakers of related languages).

Neutrality of vocabulary

While both languages have majority Latin and Romance words in their lexicons, Ido has a somewhat larger number of Germanic and Slavic words, so it could be suggested that Ido is more internationally neutral. Germanic and Slavic words in Interlingua are often Romanized. When Interlingua adopts foreign words, however, they frequently retain their original form. By comparison, almost all words in Ido take on characteristic Ido finals and orthographies, except that Ido proper names have a greater degree of flexibility than other Ido words. Both languages make use of an objective procedure to identify international words for their lexicons. Interlingua's procedure identifies a ''prototype'' that is common to the various forms of a word in its source languages, and its control languages are selected to increase the internationality of its vocabulary. Since their vocabularies are very similar, it is likely that both languages possess an internationality that extends beyond the Western language families. Wordforms can enter the vocabulary of Interlingua by derivation from a small number of roots and affixes. Speakers who are familiar with these roots and affixes can understand words developed from them, a feature that facilitates learning for speakers of any language background.

Orthography

Both languages use the Latin alphabet, but Ido orthography is such that based on the spelling of a word, you can pronounce it unambiguously. This is largely true of Interlingua as well.

Sample text

External links

Comparison between Ido and Interlingua
at the Conlang Atlas of Language Structure {{Constructed languages Interlingua Comparison of constructed languages Ido language

Neutrality of vocabulary

Orthography

Sample text

See also

External links