LATIN DICTIONARYLexicon Latīnum
verbthird conjugation, suppletive, semi-deponent, no future active participle, irregular long ī

fīō

fīō (present infinitive fierī, perfect active factus sum)
Classical[ˈfiː.oː]Ecclesiastical[ˈfiː.o]
№ 146 of the 1,000 commonest wordsMille Verba core vocabulary

Meaning

  1. copulativesuppletiveto become, be made
    Vōs ōrāmus ut discipulī ācerrimī fīātisWe are begging you to become very keen students
    CHARĪNUS: Quid mē fīet?CHARINUS: What will become of me? or, What will happen to me?166 BCE, Publius Terentius Afer, Andria 709
  2. suppletiveto happen, take place, result, arise
    ut fitas happens usually/as is customary
    fit utit happens that

Latīnē defined in Latin in our graded readers

esse, esse incipere
become, be made
fīō, fierī, factus — in De Bello Gallico II, ch. 1, 5, 9

Conjugation conjugation 3 deponent future irregular

active indicative
formpresentimperfectfutureperfectpluperfectfut. perfect
1st sg.fīōfīēbamfīam———
2nd sg.fīsfīēbāsfīēs———
3rd sg.fitfīēbatfīet———
1st pl.fīmusfīēbāmusfīēmus———
2nd pl.fītisfīēbātisfīētis———
3rd pl.fīuntfīēbantfīent———
active subjunctive
active subjunctive
formpresentimperfectperfectpluperfect
1st sg.fīamfierem——
2nd sg.fīāsfierēs——
3rd sg.fīatfieret——
1st pl.fīāmusfierēmus——
2nd pl.fīātisfierētis——
3rd pl.fīantfierent——
imperative
imperative
formactivepassive
pres. 2nd sg.fī—
pres. 2nd pl.fīte—
fut. 2nd sg.fītō—
fut. 3rd sg.fītō—
fut. 2nd pl.fītōte—
fut. 3rd pl.fīuntō—
infinitives & participles
infinitives & participles
formactivepassive
present infinitivefierī—
perfect infinitivefactum esse—
future infinitivefactum īrī—
present participlefīēns
fīente, fīentem, fīentēs, fīentī, fīentia, fīentibus, fīentis, fīentīs, fīentium
—
perfect participlefactus—
future participle—fīendus
gerundfīendī, fīendō, fīendumsupinefactum, factū

fīo, fĭĕri,
I. v. facio init.

Origins

From Proto-Italic *fuiō, ultimately from Proto-Indo-European *bʰuH- (“to grow, become, come into being, appear”). Compare with fuī, originally the perfect of this verb but now attached to sum (“to be”); and constructions with -bō, -bam (e.g. amābō, placēbō, nocēbō, monēbam, audiēbam). The past participle is that of the verb faciō (“to make; to do”), via suppletion.

Borrowings
  • Englishfiat

Quick answers

What does fīō mean in Latin?
fīō, a verb, means “to become, be made; to happen, take place, result, arise”.
What are the principal parts of fīō?
fīō, fierī, factus sum (third conjugation, suppletive, semi-deponent, no future active participle, irregular long ī).
How do you pronounce fīō?
In classical Latin, [ˈfiː.oː]; in ecclesiastical (church) Latin, [ˈfiː.o].