riikidega

Riikidega is an Estonian word that means "with the countries" or more generally "with countries." It is the plural comitative (instrumental) form of the noun riik ("country"). The comitative in Estonian is marked by the suffix -ga and expresses accompaniment, means, or association (equivalent to the English preposition "with").

Morphology and formation: the plural comitative is formed by attaching -ga to the genitive plural stem, here riikide + ga → riikidega. Related forms include riik (nominative singular), riigi (genitive singular), riigid (nominative plural) and riikide (genitive plural). The singular comitative is riigiga ("with the country").

Usage: riikidega appears in sentences to indicate interaction or association involving multiple countries, e.g., "riikidega koostöö" ("cooperation with countries") or "ta suhtleb riikidega" ("he/she communicates with countries"). Word order in Estonian is relatively flexible, so riikidega can occur before or after the verb depending on emphasis.

Pronunciation: approximately [ˈriːkideɡa] in the International Phonetic Alphabet.

Notes: Estonian has no grammatical gender and uses case endings rather than prepositions for many relational meanings; -ga is one of the common case markers indicating accompaniment or instrumentality.