The Comitative Case (-ine-)
The Finnish comitative case is a formal structure used to express who or what accompanies someone, translating roughly to "together with" or "accompanied by." Because of its elevated tone, it appears most often in news reports, literature, and descriptions of state visits and diplomatic events.
To form the comitative, take the strong plural stem of the noun (which includes the plural marker -i-), add the case ending -ne-, and attach a possessive suffix.
| Noun | English | Plural Stem | Comitative + 3rd Person | Meaning |
|---|
| puoliso | spouse | puolisoi- | puolisoineen | with his/her spouse(s) |
| avustaja | assistant | avustaji- | avustajineen | with his/her assistant(s) |
| valtuuskunta | delegation | valtuuskunti- | valtuuskuntineen | with his/her delegation(s) |
Because the comitative always builds on the plural stem, the resulting word can refer to a singular or plural companion. Puolisoineen can mean "with his spouse" or "with his spouses" depending on context.
Third-Person Subjects
When the subject is in the third person (he, she, or they), the comitative takes the third-person possessive suffix -en (or -nsa/-nsä). This is its most common use, especially when reporting on VIPs and officials.
Addressing Groups
The possessive suffix must match the subject. If you are speaking to a group (or formally to one person), use the second-person plural possessive suffix -nne (your).
Notice how the word changes from puolisoineen (with his/her/their spouses) to puolisoinenne (with your spouses).
Multiple Companions
When a person is accompanied by multiple groups or individuals connected by ja (and), the comitative ending and possessive suffix must attach to every noun in the list.
