§182. Peculiarities of Conjugation
Four verbs, dīcō, dūcō, faciō, ferō,—with their compounds, drop the vowel-termination of the Imperative, making dīc, dūc, făc, fĕr; but compounds in -ficiō retain it, as, cōnfice.
a. For the imperative of sciō, the future form scītō is always used in the singular, and scītōte usually in the plural.
J. H. Allen and J. B. Greenough, New Latin Grammar (Boston: Ginn, 1903). Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities.