Diagnosis itu jelas.

In Malay, you often do not need a verb like is / am / are when linking a subject to an adjective.

So:

• Diagnosis itu jelas = That diagnosis is clear
• literally, it is more like That diagnosis clear

This is completely normal in Malay.
A linking verb such as ialah or adalah is usually not needed in simple sentences like this.

Itu usually means that.

In Diagnosis itu jelas, it points to a specific diagnosis:

• diagnosis itu = that diagnosis / the diagnosis

In real usage, itu can sometimes feel like:

• a demonstrative: that
• or something close to a definite marker: the

So depending on context, the phrase may be understood as either:

• That diagnosis is clear
• The diagnosis is clear

In Malay, demonstratives like ini (this) and itu (that) usually come after the noun.

So:

• diagnosis itu = that diagnosis
• rumah itu = that house
• buku ini = this book

This is different from English, where this/that comes before the noun.

A useful pattern is:

• noun + ini/itu

Jelas usually means:

• clear
• obvious
• evident
• sometimes well-defined

So Diagnosis itu jelas can mean that the diagnosis is:

• easy to understand,
• obvious from the evidence,
• or definite enough not to be confusing.

The exact English translation depends on context.

Yes. Jelas is broader than just clear in the visual or explanatory sense. It can also mean:

• obvious
• evident
• plain

So if the context is medical findings or symptoms, Diagnosis itu jelas could naturally mean:

• The diagnosis is clear
• The diagnosis is obvious
• The diagnosis is evident

Yes, you can.

• Diagnosis itu jelas = That/The diagnosis is clear
• Diagnosis jelas = Diagnosis is clear / The diagnosis is clear, depending on context

Adding itu usually makes the noun phrase more specific. It helps show you are talking about a particular diagnosis already known in the conversation.

Without itu, the sentence can sound a bit more general or less specifically anchored.

Yes, if you mean this instead of that.

• Diagnosis ini jelas = This diagnosis is clear
• Diagnosis itu jelas = That diagnosis is clear

So the difference is the same basic one as in English:

• ini = this
• itu = that

Yes. Diagnosis is used in Malay and is a borrowed word, especially in medical contexts.

Malay contains many loanwords from languages such as:

• English
• Arabic
• Sanskrit
• Dutch
• Portuguese

Even when a word looks very similar to English, it still follows Malay grammar in the sentence.

So in Diagnosis itu jelas, the word diagnosis may look English-like, but the sentence structure is fully Malay.

Usually, no.

The most natural form is:

• Diagnosis itu jelas

Using adalah before an adjective like jelas is generally not the normal choice in simple everyday Malay.

A good beginner rule is:

• when the predicate is an adjective, just say it directly
  
  • Rumah itu besar = That house is big
  • Diagnosis itu jelas = That diagnosis is clear

So Diagnosis itu jelas is the best version here.

Here, jelas is an adjective.

Structure:

• Diagnosis itu = subject noun phrase
• jelas = adjective describing the subject

So the sentence pattern is basically:

• noun phrase + adjective

This is a very common Malay sentence pattern.

A rough pronunciation guide is:

• diagnosis: dee-ag-NO-sis or dee-ag-NO-sis
• itu: ee-too
• jelas: juh-las or jeh-las

A few helpful notes:

• j in Malay sounds like the j in jam
• u is usually like oo in food
• Malay spelling is generally more regular than English spelling

A rough full pronunciation could be:

dee-ag-NO-sis ee-too juh-LAS

The exact accent can vary, but Malay pronunciation is usually quite phonetic.

Yes, completely normal.

The sentence follows a common Malay pattern:

• Subject + predicate

Here:

• Diagnosis itu = subject
• jelas = predicate adjective

So the order is straightforward and natural.

Also, within the subject:

• diagnosis itu follows the normal Malay order of noun + demonstrative

So everything in Diagnosis itu jelas is standard Malay word order.