Irregular Imperatives Dic, Duc, Fac, and Fer

Four high-frequency Latin verbs have famously short second-person singular present active imperatives: dīc “say/tell,” dūc “lead,” fac “do/make,” and fer “carry/bring/bear.” A regular third-conjugation singular would lead a learner to expect -e, but these four forms lack it. Their plurals, by contrast, are dīcite, dūcite, facite, and ferte.

The irregularity is small and local. It does not spread through the whole conjugation, and it does not license dropping -e from every third-conjugation imperative. Learning the four as a rhythmic set is useful, but accurate production still depends on knowing each verb’s principal parts and compounds.

If the regular endings are not yet familiar, first review the Present Active Imperative. The present page explains only the four short singulars and the lexical families that make them tricky.

The four singulars and plurals

The long vowels in dīc and dūc are pedagogically marked. Fac and fer have no macron. In ordinary unmacronized editions all four appear as dic, duc, fac, fer.

Early Latin can retain the fuller singulars dīce, dūce, and face (archaic); there is no corresponding attested fere. Recognize those forms in early texts, but use short dīc, dūc, fac, and fer as the productive Classical paradigm.

Each form addresses one person. Objects and complements follow the syntax of the underlying verb: mihi is the person told, hospitem is led, quod is done, and hās litterās are carried.

Number: the plural restores fuller endings

English uses the same command for one or several people. Latin does not. The plural forms are not made by adding -te mechanically to the short singular in every case; learn the actual forms.

Dīcite and facite contain the expected third-conjugation plural -ite. Dūcite does too. Irregular ferō has plural ferte, matching its stem without an inserted -i-.

Why “irregular” does not mean unpredictable everywhere

Only the singular present active imperatives are the famous short forms. Other forms follow their own established paradigms:

Thus fac does not predict future imperative fac-tō; the correct form is facitō. The future imperative is a different paradigm with its own formation.

This dīcitō is (formal/marked) future imperative, not an expanded version of present imperative dīc.

Compounds of dīcō and dūcō

Many compounds transparently preserve the short singular command. Prefixes may assimilate or carry their own vowel quantity, but the verbal core remains recognizable.

Do not strip a prefix off when translating. Addūc is not simply “lead”; the prefix contributes the directed sense “bring/lead toward.”

Fac versus compounds in -ficiō

The family of faciō needs special care. Transparent combinations in which faciō remains recognizable can preserve fac: calefac “heat, make warm.” But integrated compounds in -ficiō, -ficere form their singular imperative in -fice: perfice “finish,” cōnfice “complete/dispatch,” effice “bring about.”

Perfice is not perfac, because perficiō, perficere follows the third-iō pattern in its present system. There is no safe English-based shortcut here: consult the dictionary headword and learn whether the compound is in -faciō or -ficiō.

Compounds of ferō

Compounds of ferō retain fer while the prefix may assimilate: affer “bring to,” aufer “carry away,” cōnfer “bring together/confer,” refer “bring back/report.” Their plurals end in -ferte.

The singular/plural contrast is affer versus afferte, aufer versus auferte. The doubled consonant in affer reflects prefix assimilation and must not be omitted in standard spelling.

Register and authentic usage

These four commands are not archaic curiosities. They occur naturally in dialogue, letters, speeches, poetry, military instructions, and everyday directives (neutral Classical). Their brevity can contribute rhetorical force, but a bare dīc can also be friendly when context supports it.

Vergil gives Dido an urgent request to Aeneas:

The quotation has dic without a macron because the source text is reproduced faithfully. Morphologically it is the same singular imperative taught here as dīc. Its vocative hospes confirms direct address (literary).

A parsing and production routine

When you see fer, first ask whether it is direct address in an independent command. Then identify it as second-person singular present active imperative of ferō. Use the surrounding cases to determine what is carried and where.

To command several people to “do the same thing,” do not preserve singular fac: choose plural facite, then accusative neuter idem: idem facite. To command one person to “finish the same task,” choose the different lexical verb perficiō and produce idem opus perfice.

The form fēcistis is perfect indicative from perfect stem fēc-; it does not change the imperative facite.

Common Mistakes

1. Adding regular singular -e

2. Using a singular command for several people

3. Making the plural directly from the short form

4. Extending fac to an integrated -ficiō compound

5. Dropping -e from an ordinary third-conjugation verb

Key Takeaways

Memorize singular dīc, dūc, fac, and fer together, but keep their plurals distinct: dīcite, dūcite, facite, and ferte. The irregularity belongs to the singular present active imperative, not the whole verb. Compounds of dīcō, dūcō, and ferō often preserve the short form; the faciō family requires the crucial dictionary distinction between compounds in -facere and those in -ficere. Principal parts and present-system classification—not an English translation—tell you which Latin form to produce.