(pos:形容詞)(ant:後天)<explanation>yue:出生時已經有嘅情況/條件;件事一開始嗰陣已經有嘅情況eng:inborn; innate; congenital<eg>yue:先天有缺陷 (sin1 tin1 jau5 kyut3 ham6)eng:to be born with congenital malformations