The essential verb faciō, facere, fēcī, factum, is generally regular, though features a few variant forms you may not have known, and a distinct set of rules for compounds which you may have always ‘sensed’ but never understood.

Exceptional Features

The two exceptional features of faciō are its imperative singular (just the fac, ma’am—not face, which sounds like a Canadian swearing), and its passive forms, derived from fīō (to be discussed in a later post).

Faciō also features a variant future perfect faxō (in place of the more common fēcerō) and a variant perfect subjunctive faxim (in place of the more common fēcerim).

Compound Rules

Compounds of faciō (i) replace a with i and (ii) replace the supine -actum with –ectum, and while retaining the -iō declension, sometimes they feature passive forms that are not derived from fīō.

  • cōnficiō, cōnficere, cōnfēcī, cōnfectum (finish)
  • cōnficior, cōnficī, cōnfectus sum (die) [but note that ‘ficior’ is not a word!]
  • afficiō, afficere, affēcī, affectum (affect)
  • afficior, afficī, affectus sum (be affected
  • inficiō, inficere, infēcī, infectum (dye, poison)
  • inficior, inficī, infectus sum (be poisoned)

Relation to PIE

For those interested in the topic discussed in the last post, the Latin faciō is derived from the PIE dʰeh₁, which also produced τίθημι, do, and (the German) tun.

The Essential AG: 204, 204a

Latin Derivatives: Direct and Indirect

I trust that if you’re reading this, you understand that many English words ‘are derived from’ Latin counterparts, though we can further distinguish this by stating that there are two varieties of derivation: direct and indirect.

Direct Latin derivatives (for instance ‘fact’ from the Latin factum) are more or less coequal adoptions, whereas indirect Latin derivatives (such as ‘feat’ from the French ‘fait’ from the Latin factum) feature a few sound shifts which echo the modifications of the mediating language. Another example: from dāta we have both ‘data’ (direct) and ‘date’ (indirect, through Old French ‘date’).

[A more interesting etymology, while we’re at at it: the English homograph ‘date’ (the fruit) is from the Old French ‘datte’ from the Old Provençal ‘datil’ from the Latin dactylus (the same fruit), so named because it resembled the human finger and/or because this word resembled the Semitic names for date palm: deqel/daqal, etc, which have nothing to do with fingers.]

If you’d like to rabbit-trail even further, here’s a post offering the Latin names of the five fingers, including the pinky finger, whose name made my day: (http://www.omniglot.com/blog/?p=442)

If anyone knows of a Latin derivative which is indirect but not mediated by French or Old French, I would love to see it in the comments below.

The Essential AG: 19n2