Meni je taj šešir ružan, ali tebi dobro stoji.

Because Croatian is not saying I and you as subjects here. It is using the dative case to mean something like to me and to you.

So:

• meni = to me
• tebi = to you

This is very common in Croatian with personal opinions, impressions, and how something suits someone.

So:

• Meni je taj šešir ružan = literally That hat is ugly to me
• tebi dobro stoji = literally it stands well to you, meaning it looks good on you / it suits you

If you used ja or ti, that would be nominative, which is for the subject, and it would not fit this structure.

The basic verb stajati / stojati is related to standing, and stoji literally means stands.

But in this sentence, dobro stoji is an idiomatic expression meaning:

• looks good on
• suits

So:

• Tebi dobro stoji = It looks good on you
• Ta haljina joj dobro stoji = That dress suits her

This is a very common Croatian way to talk about clothing, hairstyles, colors, and similar things.

Because dobro is an adverb, and it modifies the verb stoji.

• dobar / dobra / dobro can be an adjective, depending on gender and case
• but dobro is also the adverb form meaning well

Here it means stands well or looks good.

So:

• dobro stoji = looks good / fits well / suits
• not a good standing thing, which would require an adjective

In English, this is similar to the difference between:

• a good hat → adjective
• the hat looks good → adverb-like meaning with the verb phrase

taj means that.

So:

• taj šešir = that hat

Both words are in the masculine singular nominative form, because šešir is masculine and is the subject of the first clause.

Agreement:

• taj matches šešir
• ružan also matches šešir

So the pattern is:

• taj šešir
• ovaj šešir = this hat
• onaj šešir = that hat over there

Because ružan is an adjective agreeing with šešir.

šešir is:

• masculine
• singular
• nominative

So the adjective also has to be:

• masculine
• singular
• nominative

That gives ružan.

Compare:

• šešir je ružan = masculine singular
• haljina je ružna = feminine singular
• odijelo je ružno = neuter singular

This agreement is one of the core features of Croatian grammar.

Because the two parts use different verbs.

In the first clause:

• Meni je taj šešir ružan

the word je is the present tense of biti (to be), so this clause means The hat is ugly to me.

In the second clause:

• ali tebi dobro stoji

the main verb is stoji, not je. So there is no need for je there.

In other words:

• first clause: is ugly
• second clause: looks good / suits

So the sentence combines two different predicate types.

Yes. Meni and tebi are the full forms, while mi and ti are the short clitic forms.

So you could also say:

• Taj šešir mi je ružan, ali ti dobro stoji.

This is often more natural in everyday speech.

Using meni and tebi gives extra emphasis or contrast, especially because the sentence is contrasting two opinions:

• Meni ... ali tebi ...

That feels like:

• I think it’s ugly, but on you it looks good
• To me it’s ugly, but to you it suits

So the full forms work very well here because the contrast is important.

It strongly suggests a personal opinion, not an objective fact.

The dative meni makes that very clear:

• Meni je taj šešir ružan = I find that hat ugly / it seems ugly to me

That sounds softer and more personal than a plain statement like:

• Taj šešir je ružan = That hat is ugly

The version with meni is useful when you want to express taste, impression, or personal judgment.

Yes. Croatian word order is fairly flexible, though some versions sound more neutral than others.

Your sentence is perfectly natural:

• Meni je taj šešir ružan, ali tebi dobro stoji.

You could also hear:

• Taj šešir mi je ružan, ali ti dobro stoji.
• Taj šešir je meni ružan, ali tebi dobro stoji.

The differences are mostly about focus and emphasis.

For example:

• starting with Meni highlights my opinion
• starting with Taj šešir highlights the hat
• using meni ... tebi gives a stronger contrast
• using mi ... ti sounds lighter and more conversational

Because Croatian does not have articles like English a and the.

Instead, Croatian uses context and words like:

• ovaj = this
• taj = that
• onaj = that over there

So taj šešir already gives the noun a definite, specific feeling: that hat.

If you just said šešir, it could mean a hat or the hat, depending on context.

Sometimes yes, but be careful.

dobro stoji usually means:

• looks good on someone
• suits someone

It can overlap with fits well, but fits well in English often refers more to physical size or shape.

Croatian usually separates these ideas:

• dobro stoji = it looks good on you / suits you
• dobro pristaje = also suits you
• dobro odgovara veličina or something similar = the size fits well

So for clothing, dobro stoji is often more about appearance than size.

A very natural everyday version would be:

• Taj šešir mi je ružan, ali ti dobro stoji.

This uses the short forms mi and ti, which are common in conversation.

The original version with meni and tebi is also correct and natural, but it sounds a bit more contrastive or emphatic:

• Meni it’s ugly, but tebi it looks good

So both are good; the difference is mainly tone and emphasis.

Yes, especially these sounds:

• š in šešir = like sh in shoe
• ž in ružan = like the s in measure
• j in je = like English y in yes

A rough pronunciation guide:

• Meni = MEH-nee
• je = yeh
• taj = tie
• šešir = SHEH-sheer
• ružan = ROO-zhan
• ali = AH-lee
• tebi = TEH-bee
• dobro = DOH-bro
• stoji = STOH-yee

Also, Croatian spelling is very consistent, so once you learn the sound of each letter, pronunciation becomes much easier.