Legal Maxim's

Faciendum
— Something which is to be done.
Factum
— An act or deed.
Facultas probationum non est angustanda
— The right of offering proof is not to be narrowed.
Falsa demonstratio non nocet
— A false description does not vitiate.
Fatetur facinus qui judicium fugit
— He who flees judgment confesses his guilt.
Felix qui potuit rerum cognoscere causas
— Happy is he who has been able to understand the causes of things.
Felonia implicatur in qualibet proditione
— Felony is implied in every treason.
Festinatio justitiae est noverca infortunii
— The hurrying of justice is the stepmother of misfortune.
Fictio cedit veritati; fictio juris non est, ubi veritas
— Fiction yields to truth. Where truth is, fiction of law does not exist.
Fides servanda est
— Good faith is to be preserved.
Fieri facias (abreviated fi. fa.)
— That you cause to be made.
Filiatio non potest probari
— Filiation cannot be proved.
Firmior et potentior est operatio legis quam dispositio hominis
— The operation of law is firmer and more powerful than the will of man.
Forma legalis forma essentialis est
— Legal form is essential form.
Fortior est custodia legis quam hominis
— The custody of the law is stronger than that of man.
Fractionem diei non recipit lex
— The law does not regard a fraction of a day.
Fraus est celare fraudem
— It is a fraud to conceal a fraud.
Fraus et jus nunquam cohabitant
— Fraud and justice never dwell together.
Fructus naturales
— Vegetation which grows naturally without cultivation.
Frustra probatur quod probatum non relevat
— That is proved in vain which when proved is not relevant.
Furor contrahi matrimonium non sinit, quia consensus opus est
— Insanity prevents marriage from being contracted because consent is needed.