Editing Ido (section)

===Pronouns===
The [[pronoun]]s of Ido were revised to make them more distinct acoustically than those of Esperanto, which all end in ''i''. Especially the singular and plural first-person pronouns ''mi'' and ''ni'' may be difficult to distinguish in a noisy environment, so Ido has ''me'' and ''ni'' instead. Ido also distinguishes between [[T-V distinction|intimate (''tu'') and formal (''vu'')]] second-person singular pronouns as well as plural second-person pronouns (''vi'') not marked for intimacy. Furthermore, Ido has a pan-gender third-person pronoun ''lu'' (it can mean "he", "she", or "it", depending on the context) in addition to its masculine (''il''), feminine (''el''), and neuter (''ol'') third-person pronouns.

{| class="wikitable" style="text-align:center"
|+ Pronouns
!rowspan="3"|
!colspan="7"|singular
!colspan="6" |plural
!rowspan="3"|reflexive
!rowspan="3"|indefinite
|-
!rowspan="2"|first
!colspan="2"|second
!colspan="4"|third
!rowspan="2"|first
!rowspan="2"|second
!colspan="4"|third
|-
!''familiar''
!''formal''
!''masc.''
!''fem.''
!''neuter''
!''pan-gender''
!''masc.''
!''fem.''
!''neuter''
!''pan-gender''
|-
!Ido
| me
| tu
| vu
| il(u)
| el(u)
| ol(u)
| lu
| ni
| vi
| ili
| eli
| oli
| li
| su
| on(u)
|-
!English
| I
| [[thou]]
| you
| he
| she
| it
| they/it
| we
| you
|
|
|
| they
|oneself
| one/you/they
|-
!Esperanto
| mi
| ci¹
| vi¹
| li
| ŝi
| ĝi
| ĝi/ri²
| ni
| vi
| ili
|iŝi²
|iĝi²
| ili/iri²
| si
| oni
|}
# ''ci'', although technically the familiar form of the word "you" in Esperanto, is seldom used. Esperanto's inventor himself did not include the pronoun in the first book on Esperanto and only later reluctantly; later he recommended against using ''ci'' because different cultures have conflicting traditions regarding the use of the familiar and formal forms of "you".<ref>Eventoj, no. 103, {{ISSN|1215-959X}}. ''Ci'' estas senvalora balasto (''Ci'' is useless ballast). 1996. Available at http://www.eventoj.hu/arkivo/eve-103.htm {{Webarchive|url=https://web.archive.org/web/20060108045107/http://www.eventoj.hu/arkivo/eve-103.htm |date=8 January 2006 }}</ref>
#''ri'', ''iŝi'', ''iĝi'' and by extension ''iri'' are proposed neologisms and are rare, but they are still used albeit seldom.

''ol'', like English ''it'' and Esperanto ''ĝi'', is not limited to inanimate objects, but can be used "for entities whose sex is indeterminate: ''babies, children, humans, youths, elders, people, individuals, horses, [cattle], cats,'' etc."

''Lu'' is often mistakenly labeled an [[epicene]] pronoun, that is, one that refers to both masculine and feminine beings, but in fact, ''lu'' is more properly a "pan-gender" pronoun, as it is also used for referring to inanimate objects. From ''Kompleta Gramatiko Detaloza di la Linguo Internaciona Ido'' by Beaufront:

{{Blockquote|
''Lu'' (like ''li'') is used ''for all three genders.'' That ''lu'' does duty for the three genders at will in the singular is not in itself any more astonishing than seeing ''li'' serve the three genders at will in the plural ... By a decision (1558) the Idist Academy rejected every restriction concerning the use of ''lu.'' One may thus use that pronoun in exactly the same way for a thing and a person of obvious sex as for animals of unknown sex and a person that has a genderless name, like ''baby, child, human,'' etc., these being as truly masculine as feminine.
<br />
<br />
The motives for this decision were given in "Mondo", XI, 68: ''Lu'' for the singular is exactly the same as ''li'' for the plural. Logic, symmetry and ease demand this. Consequently, just as ''li'' may be used for people, animals, and objects whenever nothing obliges one to express the gender, so ''lu'' may be used for people, animals, and objects by the same condition. The proposed distinction would be a bothersome subtlety&nbsp;...
}}