antecedent

noun
1
a thing or an event that exists or comes before another, and may have influenced it
پیشین, قبلی, عامل قبلی
2
the people in somebody’s family who lived a long time ago
اجداد, نیاکان, نیایان, آباء و اجداد, جد, گذشتگان
synonym ancestor, forebear
3
a word or phrase to which the following word, especially a pronoun, refers
مرجع
In ‘He grabbed the ball and threw it in the air’, ‘ball’ is the antecedent of ‘it’.
adjective
1
previous
قبلی, پیشین, سابق, مقدم, ماقبل