This is the 134th most frequent Finnish word.
kaikkien
"Kaikkien" means "of all" or "everyone's" in English.
The word "kaikkien" is used here as the genitive plural form of "kaikki" (everyone), specifying possession or opinion.
Kaikkien mielestä tämä idea on hyvä.
Everyone thinks this idea is good.
"Kaikkien aikojen" translates to "of all times," where "kaikkien" is used possessively to express 'all'.
Tämä on kaikkien aikojen paras elokuva.
This is the best movie of all time.
Here, "kaikkien" refers to 'all' possessing the attention or focus.