# so-
## Irish
### Etymology

From Old Irish so-, su- (“good”), from Proto-Celtic *su-, from Proto-Indo-European *h₁su-. Cognate with Welsh hy- (“very, easy to”), Ancient Greek εὖ (eû), Sanskrit सु- (su-). Doublet of eo-.

### Prefix

so-
* very (positive or neutral)
    Synonyms: dea-, deas, maith
* X-able, easy to X
    Synonym: furasta

#### Usage notes

* This affix in Irish is added to adjectives denoting attributes of ability as well as positive attributes. It lenites the word to which it attaches.
* When it means very, so- acts like an adverb:
    ‎so- + ‎blasta (“tasty”) → ‎so-bhlasta (“very tasty”)
* When it means -able, so- acts like a plain affix:
    ‎so- + ‎briste (“broken”) → ‎sobhriste (“breakable”)
    ‎so- + ‎déanta (“done”) → ‎sodhéanta (“doable”)

#### Antonyms

* do-
* ró-

#### Derived terms
### References

* ↑ Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “2 so, su”, in eDIL: Electronic Dictionary of the Irish Language

### Further reading

* Ó Dónaill, Niall (1977) “so-”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN

## Italian
### Etymology

From Latin sub- (“under”).

### Pronunciation

* IPA: /so/
* Hyphenation: so-

### Prefix

so-
* under, beneath
    ‎so- + ‎gola (“throat”) → ‎soggolare (“to fit with a wimple”)
    ‎so- + ‎reggere (“to bear; to hold”) → ‎sorreggere (“to support, sustain”)
* used in the formation of verbs where the root action is attenuated
    ‎so- + ‎friggere (“to fry”) → ‎soffriggere (“to fry slowly with moderate heat”)
    ‎so- + ‎bollire (“to boil”) → ‎sobbollire (“to simmer”)
    ‎so- + ‎fermare (“to stop”) → ‎soffermare (“to linger”)

#### Usage notes

* It always causes gemination of an initial single consonant.

#### Derived terms
## Manx
### Etymology

From Old Irish so-, su-.

### Prefix

so-
* X-able, easily Xed

#### Derived terms
### References

* ↑ Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “2 so, su”, in eDIL: Electronic Dictionary of the Irish Language

## Old Irish
### Alternative forms

* su-

### Etymology

From Proto-Celtic *su-, from Proto-Indo-European *h₁su-. Cognate with Welsh hy- (“very, easy to”), Ancient Greek εὖ (eû), Sanskrit सु- (su-).

### Prefix

so- (triggers lenition of a following term)
* good, excellent
    ‎so- + ‎cor (“contract”) → ‎sochar (“good contract”)
    ‎so- + ‎cenél (“kindred”) → ‎sochenéuil (“well-born”)
* X-able, easy to X
    ‎so- + ‎atrab (“inhabiting”) → ‎suaitribthide (“habitable”)
    ‎so- + ‎cosc (“correction”) → ‎sochoisc (“docile”)
* very
    ‎so- + ‎cairdech (“friendly”) → ‎sochairdech (“very friendly”)

#### Antonyms

* do-

#### Derived terms
### Further reading

* Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “2 so, su”, in eDIL: Electronic Dictionary of the Irish Language
* Thurneysen, Rudolf (1940) D. A. Binchy and Osborn Bergin, transl., A Grammar of Old Irish, Dublin Institute for Advanced Studies, →ISBN, § 365, page 231; reprinted 2017

## Portuguese
### Etymology

From Latin sub-. Doublet of sub-.

### Prefix

so-
* sub- (under, beneath)
    Synonym: sub-

#### Derived terms
### References

* ↑ “so-”, in Dicionário infopédia da Língua Portuguesa (in Portuguese), Porto: Porto Editora, 2003–2024
* ↑ “so-”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2024

## Slovene
### Etymology

Inherited from Proto-Slavic *sǫ-.

### Prefix

so-
* con-, co- (with, together, jointly)

#### Derived terms
## Spanish
### Pronunciation

* IPA: /so/ [so]
* Syllabification: so-

### Prefix

so-
* sub-
    Synonym: sub-

#### Derived terms
### Further reading

* “so-”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10