Trovo questa idea originale.

Here trovo means I find / I consider / I think ... is ..., not necessarily I discover.

So:

• Trovo questa idea originale = I find this idea original
• Trovo le chiavi = I find the keys

Italian trovare can work both ways, just like English find. The context tells you which meaning is intended.

Italian often leaves out subject pronouns because the verb ending already shows who the subject is.

• trovo = I find
• trovi = you find
• trova = he/she finds

So Trovo questa idea originale already clearly means I find this idea original.
You could say Io trovo questa idea originale, but that usually adds emphasis, contrast, or clarity.

For example:

• Io trovo questa idea originale, ma lui no.
  = I find this idea original, but he doesn’t.

Trovo is the first person singular present indicative of trovare.

The present tense of trovare begins like this:

• io trovo = I find
• tu trovi = you find
• lui/lei trova = he/she finds
• noi troviamo = we find
• voi trovate = you all find
• loro trovano = they find

So the sentence is in the present tense: I find this idea original.

Because idea is a feminine singular noun, and questa must agree with it.

• questo = masculine singular
• questa = feminine singular
• questi = masculine plural
• queste = feminine plural

Examples:

• questo libro = this book
• questa idea = this idea
• queste idee = these ideas

So questa is the correct form because idea is feminine singular.

In standard Italian, a demonstrative like questo / questa usually comes directly before the noun, without an article.

So:

• questa idea = this idea
• quel libro = that book

Not normally:

• la questa idea ❌

The demonstrative already does the job of specifying the noun, so an extra article is not usually needed.

In Italian, many adjectives commonly come after the noun, especially when they describe a quality in a fairly neutral way.

So:

• questa idea originale
• literally: this idea original

That is a normal Italian word order.

Could an adjective come before the noun in Italian? Sometimes yes, but the meaning or tone can change. In this sentence, idea originale is the natural, straightforward order.

Because originale is an adjective ending in -e, and many Italian adjectives of this type have the same singular form for both masculine and feminine.

So:

• un libro originale = an original book
• un’idea originale = an original idea

The plural changes:

• libri originali
• idee originali

So originale already agrees correctly with idea; it does not need a special feminine singular ending.

Because after trovare in this meaning, Italian uses a structure like:

• trovare + object + adjective

So:

• Trovo questa idea originale
• literally: I find this idea original

This is the same pattern as English:

• I find this idea interesting
• I find the film boring

You do not say:

• Trovo questa idea è originale ❌

If you want to say This idea is original, that is a different sentence:

• Questa idea è originale.

So:

• Trovo questa idea originale = I find this idea original
• Questa idea è originale = This idea is original

The first is clearly presented as the speaker’s opinion; the second sounds more like a statement about the idea itself.

Yes, but the original sentence is the most neutral and standard order.

Standard:

• Trovo questa idea originale.

You may also hear or see variations for emphasis, such as:

• Questa idea la trovo originale.

This puts more focus on questa idea and is also very natural in spoken Italian.

A version like:

• Trovo originale questa idea

is possible, but it sounds more marked or literary. For most learners, Trovo questa idea originale is the safest model.

They are close, but not identical in tone.

• Trovo questa idea originale = I find this idea original
• Penso che questa idea sia originale = I think this idea is original

The first often sounds a bit more direct and evaluative. The second sounds more like stating an opinion through I think.

Also, notice the grammar difference:

• Trovo + noun + adjective
• Penso che + clause + subjunctive

So trovare gives you a very useful and compact structure in Italian.