Here is how the word “active” is used in the General Instruction of the Roman Missal. I have omitted the footnotes.
“This people, though holy in its origin, nevertheless grows constantly in holiness by conscious, active, and fruitful participation in the mystery of the Eucharist.” (n. 5).
“18. This will fittingly come about if, with due regard for the nature and other circumstances of each liturgical assembly, the entire celebration is arranged in such a way that it leads to a conscious, active, and full participation of the faithful, namely in body and in mind, a participation fervent with faith, hope, and charity, of the sort which is desired by the Church and which is required by the very nature of the celebration and to which the Christian people have a right and duty in virtue of their Baptism.
19 . Even though it is on occasion not possible to have the presence and active participation of the faithful, which manifest more clearly the ecclesial nature of the celebration, the celebration of the Eucharist is always endowed with its own efficacy and dignity, since it is the act of Christ and of the Church, in which the Priest fulfils his own principal function and always acts for the sake of the people’s salvation.
Hence the Priest is recommended to celebrate the Eucharistic Sacrifice, insofar as he can, even daily.
20 . Since, however, the celebration of the Eucharist, like the entire Liturgy, is carried out by means of perceptible signs by which the faith is nourished, strengthened and expressed, the greatest care is to be taken that those forms and elements proposed by the Church are chosen and arranged, which, given the circumstances of persons and places, more effectively foster active participation and more aptly respond to the spiritual needs of the faithful.”
“The Bishop should therefore be determined that the Priests, the Deacons, and the lay Christian faithful grasp ever more deeply the genuine significance of the rites and liturgical texts, and thereby be led to the active and fruitful celebration of the Eucharist.” (From n. 22)
“35. The acclamations and the responses of the faithful to the Priest’s greetings and prayers constitute that level of active participation that is to be made by the assembled faithful in every form of the Mass, so that the action of the whole community may be clearly expressed and fostered.
36 . Other parts, most useful for expressing and fostering the active participation of the faithful, and which are assigned to the whole gathering, include especially the Penitential Act, the Profession of Faith, the Universal Prayer, and the Lord’s Prayer.”
Continued in next post.