To je glupost.

• To = that / it / this depending on context
• je = is
• glupost = nonsense / stupidity / a stupid thing

So grammatically it is very literally That is nonsense or It is nonsense.

To is a neuter demonstrative pronoun. In sentences like this, it often points to a situation, statement, idea, or thing.

Depending on context, English may translate it as:

• that
• it
• this

So To je glupost can match:

• That’s nonsense
• It’s nonsense
• sometimes This is nonsense

Croatian uses to very naturally when referring to an idea or statement someone just made.

Je is the 3rd person singular present form of biti = to be.

So:

• ja sam = I am
• ti si = you are
• on/ona/ono je = he/she/it is

In To je glupost, je simply means is.

Croatian does not have articles like English a/an/the.

So glupost can mean:

• nonsense
• a stupid thing
• the nonsense

The exact meaning depends on context. In this sentence, English usually translates it most naturally as That’s nonsense.

Glupost is a feminine noun.

That matters in Croatian grammar because adjectives, pronouns, and some other words often agree with the noun’s gender. In this sentence, though, there is no adjective modifying glupost, so you do not see much agreement.

Important point: grammatical gender does not mean the thing is female in any real-world sense. It is just part of the noun’s grammar.

It is in the nominative singular.

In a sentence like To je glupost, the noun after je is commonly in the nominative because it identifies what something is.

So:

• To je glupost.
• Ovo je knjiga.
• To je problem.

All of those use nominative after is.

No. They are related, but not the same.

• glupost = a noun
  
  • stupidity, nonsense, a stupid thing
• glupo = usually an adverb or a short-form adjective/predicate form
  
  • stupidly or it is stupid

Compare:

• To je glupost. = That is nonsense.
• To je glupo. = That is stupid.

So the first names the thing as nonsense; the second describes it as stupid.

It is fairly direct and can sound blunt.

Depending on tone and context, it may mean:

• That’s nonsense
• That’s stupid
• That’s ridiculous

It is common and natural, but it is not especially soft or polite. If you want something milder, you might say:

• Mislim da to nema smisla. = I think that doesn’t make sense.
• To mi zvuči pogrešno. = That sounds wrong to me.

So To je glupost is fine, but it can sound confrontational if said sharply.

Yes, but the meaning shifts slightly:

• Ovo je glupost. = This is nonsense.
• To je glupost. = That is nonsense / It’s nonsense.
• Ono je glupost. = That over there is nonsense or something more distant

In everyday conversation, to is especially common when reacting to something someone said, suggested, or did.

Yes. Croatian word order is more flexible than English, though not completely free.

The neutral order is:

• To je glupost.

You might also hear:

• Glupost je to.

That version sounds more emphatic, something like:

• That is nonsense, that is.
• Nonsense, that’s what it is.

For learners, the safest default is To je glupost.

A simple approximation is:

to yeh GLOO-post

More carefully:

• to = like toh
• je = ye
• glupost = GLOO-post

Notes:

• j in Croatian is pronounced like English y
• stress is roughly on the first syllable of glupost

So je is not like English jee or jay; it sounds more like ye.

Yes. Glupost belongs to a very common group of feminine nouns ending in -ost.

Other examples:

• mladost = youth
• radost = joy
• žalost = sadness
• budućnost = future

This is a useful pattern because many abstract nouns in Croatian have this ending.

Here are some common singular forms:

• nominative: glupost
• genitive: gluposti
• dative: gluposti
• accusative: glupost
• locative: gluposti
• instrumental: glupošću

You do not need all of these just to use To je glupost, but it helps to know that -ost nouns often follow this pattern.

Yes. Very often it refers to:

• a statement
• an excuse
• an argument
• a plan
• a situation

For example, if someone says something you strongly disagree with, you can respond:

• To je glupost.

So it is not limited to physical objects. In fact, it is probably even more common for ideas and claims than for actual things.