toisensa

Finnish

toise- (“others”) with a possessive suffix

toisensa (plural)

Note that the nominative-looking form of this pronoun is the actual accusative form, i.e. it is used as the accusative plural:

He näkivät toisiansa.

They were seeing each other. (nähdä + partitive "to (be) see(ing), meet")

He näkivät toisensa.

They saw each other. (nähdä + accusative "to notice, perceive by seeing")

Personal/possessive forms of toisensa
no possessor	—
possessor	singular	plural
1st person	—	toisemme
2nd person	—	toisenne
3rd person	toisensa

All the cases, except for the nominative, genitive and illative, have a shortened form (see the usage notes of -nsa). Both the forms are accepted in standard Finnish.

Inflection of toisensa (Kotus type 38/nainen, no gradation)
nominative		—	toisensa
genitive		—	toistensa toisiensa
partitive		—	toisiaan toisiansa
illative		—	toisiinsa
		singular	plural
nominative		—	toisensa
accusative	nom.	—	toisensa
accusative	gen.	—	toisensa
genitive		—	toistensa toisiensa
partitive		—	toisiaan toisiansa
inessive		—	toisissaan toisissansa
elative		—	toisistaan toisistansa
illative		—	toisiinsa
adessive		—	toisillaan toisillansa
ablative		—	toisiltaan toisiltansa
allative		—	toisilleen toisillensa
essive		—	toisinaan toisinansa
translative		—	toisikseen toisiksensa
abessive		—	toisittaan toisittansa
instructive		—	—
comitative		—	toisineen toisinensa