N3
それぞれ
Each, Respectively
それぞれ行きたいところに行きましょう。
Let's each go wherever we want to go.
Explanation
「それぞれ」 means 'each' or 'respectively': every person or thing in a group has its own way. It can modify a verb directly, or take 「の」 before a noun: 「人にはそれぞれ事情がある」 (Everyone has their own circumstances); 「それぞれの部屋に戻った」 (They went back to their own rooms). It accepts the group as a whole while respecting how each member differs.
Mixed up with
「それぞれ」 is the widest in use: people, things and abstract ideas. 「それぞれの方法」, 「それぞれの色」.
「めいめい」 is usually for people only, often when asking everyone to do something on their own.
「各自」 is formal, for notices and official papers, with a tone of requirement: 「各自で弁当を持参すること」 (Each person must bring a lunch).