Tanda ini jelas.

In Malay, simple sentences often do not use a separate word for is / am / are the way English does.

So:

• Tanda ini jelas = This sign is clear

Malay commonly puts the subject first and then the description, without a verb like is.

You may sometimes see adalah, but it is usually not needed in a simple sentence like this.

Ini means this.

In Malay, demonstratives like ini and itu usually come after the noun, not before it.

So:

• tanda ini = this sign
• literally, it is closer to sign this

That word order is normal in Malay.

When ini is used as a demonstrative meaning this, it normally follows the noun:

• tanda ini = this sign
• buku ini = this book
• rumah ini = this house

Ini tanda can exist, but it usually means something more like This is a sign, where ini is standing on its own as this. That is a different structure.

So for this sign is clear, Tanda ini jelas is the natural pattern.

Because jelas is describing tanda ini.

A very common Malay sentence pattern is:

• noun phrase + adjective
• tanda ini + jelas

So:

• Tanda ini jelas = This sign is clear

Malay adjectives often come after the noun phrase they describe in this kind of sentence.

Not always. Jelas can mean several closely related things, depending on context:

• clear
• obvious
• evident
• plain
• sometimes distinct

So Tanda ini jelas could mean:

• This sign is clear
• This sign is obvious
• This sign is easy to understand

The best English translation depends on the situation.

Yes. Tanda is a flexible word.

It can mean things like:

• a sign
• a mark
• an indication
• a symbol
• sometimes a symptom or signal, depending on context

So while tanda ini could be a literal signboard, in another context it could also be an indication or mark.

You might see or hear it, but in normal everyday Malay, Tanda ini jelas is more natural.

Adalah is often used in more formal writing, or in certain sentence types, especially before nouns or formal predicates. But with a simple adjective like jelas, it is usually unnecessary.

So the best everyday form is:

• Tanda ini jelas

Yes. Adding ini makes it specific.

• tanda = a sign / sign
• tanda ini = this sign

So ini makes the noun phrase definite and points to a particular sign near the speaker or relevant in context.

Not naturally.

Tanda ini jelas means:

• This sign is clear

But Ini tanda jelas would be interpreted differently, more like:

• This is a clear sign

That is a different sentence structure, where ini is the subject by itself.

So if you want This sign is clear, keep:

• Tanda ini jelas

Use tidak before the adjective.

So:

• Tanda ini tidak jelas = This sign is not clear

That is the normal way to negate an adjective in Malay.

In speech, you can often just use intonation:

• Tanda ini jelas? = Is this sign clear?

You can also make it more explicit with question words or particles in other contexts, but for a simple yes-no question, intonation is often enough.

It works well in both.

• It is simple enough for everyday speech.
• It is also perfectly acceptable in writing.

That is one reason it is a useful beginner sentence: it follows a very common Malay pattern and sounds natural.