Avus constans etiam in re aspera spem retinet; puer piger autem cito laborare desinit.

Constans is an adjective, but it belongs to the third declension, so it does not have endings like -us, -a, -um in the nominative singular.

Here, avus constans means the steadfast/grandfather who is steadfast.
Both words are nominative singular masculine, so they agree.

A learner may expect something like constantius or constandus, but constans is the correct nominative singular form for this adjective.

Its basic pattern is:

• nominative singular: constans
• genitive singular: constantis

So if you see constans, think of it as a normal adjective of the third declension.

In Latin, adjective position is much freer than in English. Both avus constans and constans avus are possible.

Here, avus constans simply means a steadfast grandfather or the steadfast grandfather. The adjective after the noun is very common in Latin and does not sound strange.

So you should not assume that post-position changes the meaning dramatically. Latin word order often reflects emphasis or style more than basic grammar.

Etiam means also, even, or still, depending on context.

In this sentence, it gives emphasis:

• avus constans etiam in re aspera spem retinet

This suggests something like the steadfast grandfather keeps hope even in a difficult situation.

So etiam strengthens the idea that hope is retained not only in easy times, but even in hard ones.

The preposition in can take two different cases:

• accusative if it means into or movement toward
• ablative if it means in, on, or in the midst of without movement

Here, in re aspera means in a difficult situation/circumstance, so there is no motion. That is why re is ablative.

So:

• in rem asperam = into a difficult situation
• in re aspera = in a difficult situation

Re is the ablative singular of res, a fifth-declension noun meaning thing, matter, affair, circumstance, or situation.

In this sentence, res is being used in a broad sense: a situation or circumstance.

So in re aspera literally means in a harsh matter, but more naturally in a difficult situation.

Aspera agrees with re.

Since re is:

• feminine
• singular
• ablative

the adjective must also be:

• feminine
• singular
• ablative

So:

• res aspera = a difficult situation
• in re aspera = in a difficult situation

This is an example of adjective agreement: adjectives match their nouns in gender, number, and case.

Spem is the direct object of retinet.

The verb retinere means to hold back, keep, retain, or preserve. The thing being retained is the direct object, so it takes the accusative.

• spes = hope
• spem = hope, as direct object

So:

• spem retinet = he retains hope / he keeps hope

Because avus is nominative singular and retinet is third-person singular.

So the grammar matches:

• avus = subject, nominative singular
• retinet = he/she/it retains

Since avus means grandfather, the natural translation is the grandfather retains.

Latin often leaves subject pronouns unstated, so the verb ending helps identify the subject’s number and person.

Autem means however, but, or on the other hand.

It introduces a contrast with the first clause:

• Avus constans... spem retinet
• puer piger autem... desinit

So the sense is:

• the grandfather remains hopeful,
• but the lazy boy quickly stops working.

A useful thing to remember is that autem usually does not come first in its clause. It often appears in second position, as it does here.

No, it is not repetition. Puer means boy, and piger means lazy.

Together they form the lazy boy or a lazy boy.

Latin often places a noun and its adjective side by side like this:

• puer piger
• vir bonus
• femina fortis

So this is just a normal noun + adjective combination.

Because desinit is one of those verbs that can be followed by a complementary infinitive.

• desinit = he stops or he ceases
• laborare = to work

Together:

• laborare desinit = he stops working

English also does something similar: he begins to work, he wants to work, he stops working. In Latin, many such verbs are followed by the infinitive.

So laborare is not the main verb of the clause; desinit is.

Cito is an adverb meaning quickly.

It modifies desinit laborare as a verbal idea: the boy quickly stops working.

You can think of it as answering the question how?

• How does he stop working?
• Quickly.

It does not describe puer; it describes the action.

Latin has no articles. It has no direct equivalent of English the or a/an.

So:

• avus can mean a grandfather or the grandfather
• puer can mean a boy or the boy
• spem can mean hope or the hope, depending on context

You determine whether to use a or the from context and from natural English style when translating.

The semicolon simply separates two closely related clauses and highlights the contrast between them.

The contrast is already expressed by autem, so another strong contrasting conjunction like sed is not necessary.

The punctuation helps the reader see the structure:

• first clause: Avus constans etiam in re aspera spem retinet
• second clause: puer piger autem cito laborare desinit

So the semicolon is mainly a stylistic and organizational choice in the written sentence.

Yes. Literal translation is useful for understanding the grammar, but natural English is often different.

Possible natural translations include:

• in a difficult situation
• in hard circumstances
• in adversity
• when things are difficult

That is often how Latin res is used: not just a physical thing, but a matter, condition, or situation.

The sentence has two main clauses joined by contrast.

First clause:

• Avus constans = subject
• etiam in re aspera = prepositional phrase
• spem = direct object
• retinet = main verb

Second clause:

• puer piger = subject
• autem = contrasting particle
• cito = adverb
• laborare = complementary infinitive
• desinit = main verb

So the overall pattern is:

• The steadfast grandfather keeps hope even in difficulty;
• the lazy boy, however, quickly stops working.