Gigi bungsu saya tumbuh.

• gigi = tooth / teeth
• bungsu = youngest, last-born, youngest in order
• saya = I / me / my
• tumbuh = grow, grow in, emerge

As a whole, gigi bungsu means wisdom tooth. So the sentence means My wisdom tooth is growing or My wisdom teeth are growing, depending on context.

In Indonesian, possession usually comes after the noun.

• gigi saya = my tooth/teeth
• literally, this is closer to tooth of mine

So:

• gigi bungsu saya = my wisdom tooth / my wisdom teeth

This is normal Indonesian word order.

Bungsu usually means youngest or last-born, especially for children in a family.

In gigi bungsu, it refers to the tooth that appears last, so it means wisdom tooth.

A learner might find this surprising because bungsu is not literally a medical word by itself. But in this fixed expression, gigi bungsu is the normal way to say wisdom tooth.

It can mean either tooth or teeth.

Indonesian nouns usually do not change form for singular vs. plural. So:

• gigi = tooth / teeth

That means Gigi bungsu saya tumbuh could mean:

• My wisdom tooth is growing in
• My wisdom teeth are growing in

Context tells you which one is meant.

If you really want to make it clearly plural, you could say:

• gigi-gigi bungsu saya = my wisdom teeth

But in many everyday situations, Indonesians would simply use gigi bungsu saya and let context do the work.

Both are possible, depending on context.

Tumbuh literally means to grow, but with teeth it often corresponds to English expressions like:

• grow in
• come in
• erupt

So Gigi bungsu saya tumbuh is a natural way to say that your wisdom tooth is starting to appear.

Indonesian often does not need a word like is/am/are in places where English does.

So instead of saying something structurally like My wisdom tooth is growing, Indonesian can simply say:

• Gigi bungsu saya tumbuh

This is completely normal. Indonesian grammar does not require a verb like to be in the same way English does.

It depends on what you want to emphasize.

• Gigi bungsu saya tumbuh = my wisdom tooth is growing / my wisdom tooth grows
• Gigi bungsu saya sedang tumbuh = my wisdom tooth is currently growing

Sedang adds a clearer in progress right now meaning.

So both are correct:

• without sedang: simple and natural
• with sedang: more explicit about the ongoing process

Yes, gigi bungsu is a common and standard expression.

You may also see:

• geraham bungsu

Since wisdom teeth are molars, geraham bungsu is a bit more specific. But gigi bungsu is very common and fully natural.

Yes.

• gigi bungsu saya tumbuh = neutral / polite / standard
• gigi bungsuku tumbuh = more personal, often more casual

The ending -ku means my, so:

• gigi bungsuku = my wisdom tooth

Both are correct. In conversation, -ku often sounds a bit more intimate or informal, while saya sounds more neutral or polite.

A simple approximation is:

• gigi: gee-gee
• bungsu: boong-soo
• saya: sah-yah
• tumbuh: toom-booh

A few useful notes:

• g in gigi is always a hard g, like in go
• ng in Indonesian is like the ng in sing
• u is usually pronounced like oo in food
• h at the end of a word may be light, but it is still part of the pronunciation

So the whole sentence sounds roughly like:

gee-gee boong-soo sah-yah toom-booh