Furor regis milites terret.

The subject is furor.

You can tell because:

• furor is in the nominative singular, the case normally used for the subject.
• terret means he/she/it terrifies or terrifies, so it needs a singular subject.
• furor is singular, so it matches the verb.

So the basic structure is:

• furor = subject
• milites = direct object
• terret = verb

So: The fury ... terrifies the soldiers.

Because regis is the genitive singular form of rex (king).

The genitive case often shows:

• possession: the king’s
• relationship: of the king

So:

• rex = king
• regis = of the king / the king’s

In this sentence, regis goes with furor, giving furor regis = the king’s fury or the fury of the king.

Because Latin changes word endings depending on the word’s job in the sentence.

For rex, regis:

• rex = nominative singular = the king as subject
• regis = genitive singular = of the king / the king’s

Here, the king is not the subject. The sentence is not saying the king terrifies...
It is saying the king’s fury terrifies...

So Latin uses regis, not rex.

Milites is the direct object because it is in the accusative plural here.

The verb terret is a transitive verb: it terrifies someone. The people being terrified are the soldiers.

So:

• milites = soldiers
• in this sentence = the soldiers as the direct object

A learner should also notice that milites could be nominative plural in some contexts, but here it is understood as accusative plural because:

• the verb is singular (terret), so the subject is not milites
• furor fits the role of subject much better grammatically

The -t ending shows that the verb is third person singular in the present tense.

So terret means:

• he terrifies
• she terrifies
• it terrifies

In this sentence, the subject is furor, which is a singular thing, so English naturally uses it terrifies or simply terrifies.

This is why the verb is singular: furor ... terret.

It comes from the verb terreo, terrere, meaning to frighten or to terrify.

Its forms work like this:

• terreo = I terrify
• terres = you terrify
• terret = he/she/it terrifies

So terret is the present active indicative, third person singular, from terreo.

Latin does not have a definite article like English the or an indefinite article like a/an.

So Latin often leaves article words unstated, and English supplies them when translating.

That means:

• furor can mean fury or the fury
• regis can mean of a king or of the king
• milites can mean soldiers or the soldiers

In a normal translation here, English usually says The king’s fury terrifies the soldiers.

Yes. Latin word order is more flexible than English because the endings show each word’s role.

These could all mean essentially the same thing:

• Furor regis milites terret
• Milites furor regis terret
• Regis furor milites terret
• Milites terret furor regis

The endings still tell you:

• furor = subject
• regis = dependent genitive, of the king
• milites = object
• terret = singular verb

However, word order can change emphasis. For example, putting milites first might emphasize the soldiers.

It goes with furor.

So the phrase is:

• furor regis = the king’s fury

It does not mean the soldiers of the king here. If Latin wanted to make regis go naturally with milites, the sentence structure and sense would usually point more clearly in that direction.

Also, furor regis is a very natural genitive construction: a noun plus of the king.

Because not all Latin nominative singular nouns end in -us.

Furor is a third-declension noun. Its dictionary form is:

• furor, furoris = fury, madness

Third-declension nouns have many different nominative endings, including:

• -or
• -o
• -is
• -x
• and others

So furor is perfectly normal as a nominative singular form.

Formally, milites can be either:

• nominative plural = soldiers
• accusative plural = soldiers

The form is the same in both cases.

So how do we tell here? By the rest of the sentence:

• terret is singular, so the subject must be singular
• furor is singular and nominative
• therefore milites must be the object

So in this sentence, milites is accusative plural.

Usually, the simple present terrifies is the most straightforward translation.

Latin present tense often corresponds to English simple present, though sometimes English present progressive (is terrifying) may fit the context.

But for a basic sentence like this, the normal translation is:

• The king’s fury terrifies the soldiers

rather than:

• The king’s fury is terrifying the soldiers

The pattern is:

subject + genitive modifier + direct object + verb

More specifically:

• furor = subject
• regis = genitive modifying furor
• milites = direct object
• terret = verb

So you can think of it as:

[The king’s fury] [the soldiers] terrifies.

In smoother English word order:

The king’s fury terrifies the soldiers.