geugeon ajik bimirinikka samchonhantedo malhaji ma.

That’s still a secret, so don’t tell Uncle either.

Breakdown of geugeon ajik bimirinikka samchonhantedo malhaji ma.

• 이다: to be
• ~은: topic particle
• ~도: additive particle
• ~한테: dative particle

Questions & Answers about geugeon ajik bimirinikka samchonhantedo malhaji ma.

What does 그건 mean, and why isn’t it written as 그것은?

그건 is a contracted form of 그것은 (or very commonly 그거는 in speech).

• 그것 / 그거 = that / that thing
• -은 / -는 = topic marker

So 그건 means something like as for that or that thing is...

In everyday Korean, contractions like this are very common:

• 그것은 → 그건
• 이것은 → 이건
• 저것은 → 저건

So this is just a natural, shortened spoken-style form.

What does the -건 part mean exactly?

In 그건, the 건 comes from 것은.

So:

• 그 = that
• 것 = thing
• 은 = topic particle

Together:

• 그것은 → 그건

This kind of contraction happens a lot in Korean, especially in casual or conversational language.

What does 아직 mean here?