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Definition: 1. generations to come in the future; 2. all of a person’s descendants

Synonyms: offspring, future generations, descendants, progeny

Antonyms: ancestors

Tips: Posterity is a more sophisticated way of referring to future generations and the idea of saving or documenting knowledge for use in the future.

Usage Examples:

The President’s most fundamental duty is to create and preserve freedom for us and our posterity. (descendants, future generations)

My mother in-law is documenting and preserving all the art she has collected for posterity. (offspring, descendants)

Their recollections of the war were recorded for posterity. (future generations, offspring, descendants)

The CEO wrote his memoir for posterity. (the future, descendants)