Moj gležanj je još bolan.

Moj means my, so moj gležanj literally means my ankle.

In Croatian, possessive words like moj, tvoj, njegov, njezin agree with the noun they describe. Since gležanj is:

• masculine
• singular
• nominative

the correct form is moj.

That said, Croatian sometimes omits possessives when ownership is obvious from context, especially with body parts. So depending on the situation, a speaker might also say something like Gležanj me još boli or Gležanj mi je još bolan. But moj gležanj is perfectly clear and correct.

Gležanj means ankle.

It is a masculine noun in Croatian. You can tell that from the adjective and possessive forms used with it:

• moj gležanj
• bolan gležanj

Because it is masculine singular, adjectives describing it also take masculine singular forms.

Je is the 3rd person singular form of the verb biti (to be), so it means is.

The sentence structure is:

• Moj gležanj = my ankle
• je = is
• još = still
• bolan = painful / sore

So literally, the sentence is:

My ankle is still painful/sore.

Croatian often uses forms of biti in exactly the same kind of way English uses to be.

These are two different structures:

• bolan = an adjective, meaning painful, sore
• boli = a verb, meaning hurts

So:

• Moj gležanj je još bolan.
  = My ankle is still sore/painful.

• Moj gležanj još boli.
  = My ankle still hurts.

Both are possible, but they are built differently.

A very common Croatian pattern is also:

• Gležanj me još boli.
  Literally: The ankle still hurts me.
  Natural English: My ankle still hurts.

So the sentence you were given uses the adjective pattern rather than the verb pattern.

Bolan is an adjective, and it has to agree with gležanj.

Since gležanj is:

• masculine
• singular
• nominative

the adjective must also be:

• masculine
• singular
• nominative

That gives bolan.

Compare:

• bolan gležanj = a painful ankle
• bolna ruka = a painful arm/hand
• bolno koljeno = a painful knee

So the ending changes depending on the noun’s gender.

Here, još means still.

So Moj gležanj je još bolan means My ankle is still sore/painful.

Be careful, because još can also mean more or another, depending on context. For example:

• još vode = more water
• još jedan = one more / another

In this sentence, because it comes with a state that continues, the meaning is clearly still.

Yes. Još uvijek also means still, and it can sound a bit more explicit.

So these are both correct:

• Moj gležanj je još bolan.
• Moj gležanj je još uvijek bolan.

The second version may sound slightly fuller or more emphatic, but both are natural.

The basic order here is very natural:

• Moj gležanj je još bolan.

But Croatian word order is more flexible than English, so some variation is possible depending on emphasis. For example:

• Još je moj gležanj bolan.
• Moj je gležanj još bolan.

However, these alternatives usually add a special emphasis or sound a bit more marked. For a learner, Moj gležanj je još bolan is the safest and most neutral version.

It is in the nominative singular.

That is because gležanj is the subject of the sentence:

• Moj gležanj = the thing being described
• je još bolan = is still painful

You can recognize nominative here from the dictionary form of the noun and from the agreement:

• moj
• bolan

Both match a masculine singular nominative noun.

It is correct, but depending on the situation, many speakers would more naturally say:

• Gležanj me još boli.
• Još me boli gležanj.
• Moj gležanj još boli.

These use the verb boljeti (to hurt), which is often very common when talking about pain.

Your sentence, Moj gležanj je još bolan, is more like:

• My ankle is still sore
• My ankle is still painful

So it sounds slightly more descriptive, while boli sounds more like active pain.

A rough guide is:

GLEH-zhany

More specifically:

• gl as in glad
• e as in bed (short and clear)
• ž sounds like the s in measure or vision
• anj has a soft ny sound, similar to Spanish ñ in señor

So gležanj is approximately GLEH-zhany.

The stress can vary by dialect and teaching style, but for a beginner, getting the sounds roughly right is the main thing.