Same word as firster:
aboriginal,ahead,antecedent, anterior,basic,beginning,cardinal,early,elementary, first off,front,fundamental,head, headmost, in the beginning,inaugural, inceptive,incipient,initial, introductory,key, lead off,leading,least, number one, numero uno,opening,
aboriginal,ahead,antecedent, anterior,basic,beginning,cardinal,early,elementary, first off,front,fundamental,head, headmost, in the beginning,inaugural, inceptive,incipient,initial, introductory,key, lead off,leading,least, number one, numero uno,opening,