Whether determinate words are required in the sacraments?

Objections

Objection 1 : It seems that determinate words are not required in the sacraments. For as the Philosopher says (Peri Herm. i), "words are not the same for all." But salvation, which is sought through the sacraments, is the same for all. Therefore determinate words are not required in the sacraments.
Objection 2 : Further, words are required in the sacraments forasmuch as they are the principal means of signification, as stated above (Article [6]). But it happens that various words mean the same. Therefore determinate words are not required in the sacraments.
Objection 3 : Further, corruption of anything changes its species. But some corrupt the pronunciation of words, and yet it is not credible that the sacramental effect is hindered thereby; else unlettered men and stammerers, in conferring sacraments, would frequently do so invalidly. Therefore it seems that determinate words are not required in the sacraments.