Ο παιδίατρος είπε ότι το μωρό δεν έχει πυρετό, αλλά χρειάζεται ξεκούραση.

Ο is the masculine singular definite article, meaning the.

So:

• ο παιδίατρος = the pediatrician / the pediatric doctor

Greek articles show gender, number, and case. Here, ο tells you the noun is:

• masculine
• singular
• nominative (the subject of the sentence)

If the pediatrician were female, Greek would usually say η παιδίατρος.

Είπε is the aorist form of λέω, which means to say / to tell.

Here, είπε means:

• said
• told

The aorist is commonly used for a completed past action. So Ο παιδίατρος είπε... means The pediatrician said...

This is the normal tense choice when reporting something someone said once at a specific moment.

Ότι means that and introduces a subordinate clause.

So:

• είπε ότι... = said that...

In English, that is often optional:

• The pediatrician said that the baby doesn’t have a fever
• The pediatrician said the baby doesn’t have a fever

In Greek, ότι is very common and natural here.

A similar word you may also see is πως, which can often work the same way in this kind of sentence.

Yes. Μωρό is a neuter noun in Greek, so it takes the neuter singular article το.

• το μωρό = the baby

This grammatical gender does not mean the baby is biologically neuter. Greek nouns simply belong to grammatical gender classes. For babies, μωρό is normally neuter regardless of whether the baby is male or female.

In Greek, δεν is the standard negation used before finite verbs in ordinary statements.

So:

• έχει = has
• δεν έχει = does not have

Greek usually places δεν directly before the verb:

• το μωρό δεν έχει πυρετό = the baby does not have a fever

That word order is completely normal.

Yes. Greek commonly uses έχω + a noun for physical conditions, just as English often says have a fever.

So:

• έχει πυρετό = has a fever

Notice that Greek often leaves out the article here:

• πυρετό rather than έναν πυρετό or τον πυρετό

That is because the phrase is expressing a general medical condition, not identifying a specific fever.

Because both nouns are being used in a general, non-specific way.

• έχει πυρετό = has a fever / has fever
• χρειάζεται ξεκούραση = needs rest

In Greek, abstract nouns and condition nouns often appear without an article in expressions like these.

Compare the sense:

• χρειάζεται ξεκούραση = needs rest in general
• χρειάζεται τη ξεκούραση would sound much more specific and usually would not be the natural choice here

So the lack of article is normal and idiomatic.

It refers to the baby.

Greek often leaves out subject pronouns when they are understood from context. This is called being a pro-drop language.

So after:

• το μωρό δεν έχει πυρετό

the next clause:

• αλλά χρειάζεται ξεκούραση

naturally continues with the same understood subject:

• but it needs rest

Greek does not need to say αυτό here. The verb form and context are enough.

Χρειάζεται is the normal 3rd person singular form of χρειάζομαι / χρειάζω in modern usage for need.

Here it means:

• he/she/it needs

So:

• το μωρό χρειάζεται ξεκούραση = the baby needs rest

This is the correct form for a singular subject like το μωρό.

Yes. Αλλά means but and introduces a contrast.

Here the contrast is:

• the baby doesn’t have a fever
• but it does need rest

So the sentence gives two pieces of information that are related but contrast slightly:

• no fever
• still needs rest

That is exactly the kind of situation where αλλά is used.

Because αλλά joins two clauses, and Greek punctuation usually places a comma before it in this kind of sentence, much like English often does before but.

So the structure is:

• Ο παιδίατρος είπε ότι το μωρό δεν έχει πυρετό, αλλά χρειάζεται ξεκούραση.

The comma helps separate the two coordinated ideas:

1. the baby doesn’t have a fever
2. it needs rest

Sometimes, yes, especially in more informal speech, but keeping ότι is very standard and clear.

So both of these can occur:

• Ο παιδίατρος είπε ότι το μωρό δεν έχει πυρετό...
• Ο παιδίατρος είπε το μωρό δεν έχει πυρετό...

However, the version with ότι is usually the safer and more textbook-like choice for learners.

Greek word order is more flexible than English, because endings and articles help show grammatical relationships. But this sentence uses a very natural, neutral order.

The given order sounds standard and clear:

• Ο παιδίατρος είπε ότι το μωρό δεν έχει πυρετό, αλλά χρειάζεται ξεκούραση.

You may sometimes hear small variations for emphasis, but learners should treat this version as an excellent default model.