것 / 거: The General Noun 'thing / one'

것 is one of the hardest-working words in the whole language, and most beginners meet it disguised as three unrelated English words. 것 means "thing" — but it is really a general-purpose noun that stands in for whatever noun you don't want to name. On its own it is almost empty; it survives on the modifier in front of it. Put a demonstrative before it and you get "this one"; put a possessor before it and you get "mine"; put an adjective before it and you get "the red one"; put a whole clause before it and you get "something to eat." One little noun, and it quietly powers Korean's possessive pronouns, its "which one?" shopping talk, and — later — a big chunk of its sentence machinery.

The first thing to know: 것 always leans backward. It cannot open a phrase. You will never say 것 by itself the way English can say "a thing"; something must come before it to give it content.

The colloquial form 거

In everyday speech, 것 almost always shrinks to 거 (geo). 것 is the full, careful, written form; 거 is what actually comes out of a Korean mouth. You will hear 이거 far more than 이것, and 내 거 far more than 내 것. Both are correct — the difference is register, not grammar.

Demonstrative + 것: 이것 · 그것 · 저것

Attach the three demonstratives (이 "this," 그 "that," 저 "that over there") and you get the basic "this/that thing."

Notice the register slide: 이것은 is careful, but 그거 is exactly how you'd ask across a table. For the three-way 이/그/저 system itself, see demonstratives 이·그·저; for the fused pronoun/adverb series (이것/여기/이렇게), see 이것·여기.

Possessor + 것: this is how Korean says "mine"

English has a special set of possessive pronouns — mine, yours, hers, ours. Korean has no such set. It just puts a possessor in front of 것/거 and lets "the general noun" mean "the one belonging to [X]."

So 내 것 / 내 거 literally is "my thing," used exactly where English says "mine." 네 것 = "yours," 선생님 것 = "the teacher's (one)." There is no separate word to memorize — the possessor does all the work, and 것 supplies the empty noun for it to possess. (On the underlying possessive 의, and why 나의 → 내, see possessive 의.)

Adjective + 것: "the red one," "the big one"

Put a describing word in its noun-modifying (attributive) form before 것/거, and you get English "the _ one." This is the single most useful pattern for shopping and choosing.

Here 빨간 거 = "the red one," 파란 거 = "the blue one," 큰 거 = "the big one." English reaches for the pronoun one to avoid repeating the noun; Korean reaches for 것/거. Note 걸로 in the second example — that is 것으로 (것 + the 으로 "with/by" particle) contracted, which we come to next.

Clause + 것: "something to eat"

The most powerful use: put an entire clause (in its attributive form) before 것, and 것 becomes the head noun for that clause — "the [thing] that…". With the prospective ending -을/ㄹ, 먹을 것 is literally "the thing [I] will eat" = "something to eat."

This is a preview of 것 as a full nominalizer — the device that turns any clause into a noun so it can take particles and act as a subject or object. That larger role gets its own page: 것 as clause nominalizer. For now, just register that 먹을 것 ("something to eat") and 내 것 ("mine") are the same 것 — an empty noun filled by whatever sits in front of it.

The contractions: 게, 건, 걸 (this is where learners trip)

Because 것/거 is spoken so constantly, it fuses with the following particle. These contractions are not optional flourishes — in natural speech they are the default, and hearing 것이 spelled out where 게 belongs sounds oddly stiff. Memorize this table; it repays you every conversation.

So 이것이 → 이게, 그것은 → 그건, 이것을 → 이걸, and the copula 이것이에요 → 이거예요. (*거가 exists in very casual speech — 이거가 있어 — but 게 is the standard contraction; prefer 이게.)

Why English needs three words and Korean needs one

Step back and the elegance is clear. English splits this job across three separate devices:

• "one" — the red one, the big one → Korean 빨간 것, 큰 것
• "thing / something" — some*thing to eat* → Korean 먹을 것
• the 's possessive — that's mine → Korean 내 것

Korean funnels all three through the identical structure: [modifier] + 것/거. Once you internalize that 것 is just "an empty noun that borrows meaning from what precedes it," you stop translating word-by-word and start hearing one clean pattern where English hears three.

Common Mistakes

1. Writing ×거을 for the object. 거 ends in a vowel, so if you do spell the particle out it must be 거를 (거 + 를), never ×거을. But the natural written/spoken contraction is simply 걸 (것을). ×거을 mixes the consonant-final particle 을 onto a vowel-final host — it's just wrong.

2. Spelling 거 as ×꺼. After a ㄹ-ending modifier (할 거, 갈 거) and in 내 거, the 거 is pronounced tense — [할 꺼], [내 꺼] — so learners (and plenty of natives) write ×꺼. The standard spelling stays 거.

3. Using 거 in formal writing. 거 is the casual reduction; a report, exam answer, or notice wants the full 것. Don't write 이거는 결과입니다 in a formal document — write 이것은 결과입니다.

4. Spelling out 것이/것을 in casual speech. Not ungrammatical, but 이것이 좋아요 where a friend expects 이게 좋아요 sounds bookish. In conversation, contract: 이게, 이건, 이걸.

5. Trying to use 것 with no modifier. 것/거 cannot stand alone meaning "a thing." "I want something" is not ×것을 원해요 — you need a modifier (뭔가, 먹을 것, etc.). 것 is empty until something fills it.

Key Takeaways

• 것/거 is a general noun ("thing / one") that always takes a modifier in front: demonstrative, possessor, adjective, or clause.
• It replaces English one, thing/something, and the possessive mine/yours — three English devices, one Korean structure.
• 거 is the everyday spoken form; 것 is the full written form. Same word, different register.
• With particles it contracts: 것이 → 게, 것은 → 건, 것을 → 걸, 것으로 → 걸로, 것이에요 → 거예요.
• Pronounced tense ([꺼]) but spelled 거; never ×꺼, never ×거을.