Antonyms of adj pre-existent

1 sense of pre-existent

Sense 1
preexistent, pre-existent, preexisting, pre-existing -- (existing previously or before something; "variations on pre-existent musical themes")

INDIRECT (VIA antecedent) -> subsequent -- (following in time or order; "subsequent developments")
                                                                         

Similarity of adj pre-existent

1 sense of pre-existent

Sense 1
preexistent, pre-existent, preexisting, pre-existing -- (existing previously or before something; "variations on pre-existent musical themes")
       => antecedent (vs. subsequent) -- (preceding in time or order)