Inisiatif menunjukkan profesionalisme.

In this sentence, inisiatif is a noun, meaning initiative.

So Inisiatif menunjukkan profesionalisme is structured like:

• Inisiatif = the subject
• menunjukkan = shows / demonstrates
• profesionalisme = professionalism

Indonesian often uses nouns very naturally as sentence subjects, just like English does.

Because the sentence is saying that initiative shows or demonstrates professionalism, not that initiative is professionalism.

Compare:

• Inisiatif menunjukkan profesionalisme = Initiative shows professionalism.
• Inisiatif adalah profesionalisme = Initiative is professionalism.
  This would mean something quite different and would usually sound odd.

So menunjukkan is the action verb that connects the two ideas.

The prefix meN- is a very common Indonesian verb-forming prefix. It often creates an active verb.

Here:

• tunjuk = point / indicate / show
• menunjukkan = to show / to demonstrate / to indicate

This verb also includes the suffix -kan, which often gives the sense of showing something or causing something to be shown.

So menunjukkan is a standard active transitive verb meaning to show something.

This is due to a common sound change in Indonesian prefixes.

When meN- attaches to a root beginning with t, the t is usually dropped:

• tulis → menulis
• tarik → menarik
• tunjuk → menunjuk / menunjukkan

So tunjuk becomes menunjuk-, not mentunjuk-.

Indonesian does not use articles like English the, a, or an.

So inisiatif can mean:

• initiative
• the initiative
• an initiative

And profesionalisme can mean:

• professionalism
• the professionalism

The exact interpretation depends on context. In a general statement like this, it usually means something broad and abstract: Initiative shows professionalism.

Yes, very naturally.

Even though inisiatif is a noun, Indonesian often allows a short, general statement like this to sound broader in meaning. In English, we might express it as:

• Initiative shows professionalism
• Taking initiative shows professionalism
• Showing initiative demonstrates professionalism

The exact English wording can vary, but the Indonesian sentence is perfectly natural as a general principle.

Indonesian verbs usually do not change form for tense.

So menunjukkan by itself does not specifically mean:

• shows
• showed
• will show

Instead, tense is usually understood from context or added with time words such as:

• sekarang = now
• kemarin = yesterday
• besok = tomorrow
• sudah = already
• akan = will

In this sentence, without any time marker, it is understood as a general truth or present-time statement: Initiative shows professionalism.

Yes, very much so.

The basic order here is:

• Subject: Inisiatif
• Verb: menunjukkan
• Object: profesionalisme

So it follows the common SVO pattern:

• Inisiatif → subject
• menunjukkan → verb
• profesionalisme → object

That makes this sentence quite straightforward for English speakers.

Yes. That is also correct.

Adding itu after inisiatif makes the noun phrase more specific:

• Inisiatif menunjukkan profesionalisme = Initiative shows professionalism.
• Inisiatif itu menunjukkan profesionalisme = That initiative shows professionalism / The initiative shows professionalism.

So without itu, the sentence sounds more general. With itu, it refers to a particular initiative.

Yes, profesionalisme is a loanword, ultimately related to English professionalism.

A rough pronunciation is:

• pro-fe-si-o-na-lis-me

Indonesian pronunciation is generally more regular than English spelling. Each vowel is usually pronounced clearly, so the word is said more syllable-by-syllable than in English.

Also, many formal or abstract Indonesian words are borrowed from Dutch, English, Arabic, Sanskrit, or other languages, so learners will often recognize words like this.

Yes, it is very natural.

Menunjukkan profesionalisme means to show professionalism or to demonstrate professionalism, and it is commonly used in formal, workplace, educational, and evaluative contexts.

For example:

• Dia menunjukkan profesionalisme yang tinggi.
  He/She showed a high level of professionalism.

• Sikap itu menunjukkan profesionalisme.
  That attitude shows professionalism.

So in your sentence, the phrase sounds idiomatic and normal.