Nonacrostic

Since Psalms 32 and 49, which are nonacrostic, exceed in length the acrostic Psalm 112, we may infer that their authors consciously chose not to play according to the alphabetic rules of composition.

Source: wiktionary

Both an acrostic argument and a nonacrostic argument are prefixed to some of Plautus's comedies.

Source: wiktionary

Nearly all of his litanies begin with the word gandz, except for nos. 7 (the only acrostic litany without his name), 11 (the only such litany among the acrostic litanies with his name), and 12 (the only nonacrostic litany).

Source: wiktionary