Korean -어지다, -어 오다, -어 가다: A Fitness Journey

Korean -어지다 turns an adjective into a change — 건강해졌어요 (I became healthy) — while -어 오다 covers what you’ve kept doing up to now (3년 동안 운동해 왔어요, I’ve exercised for three years) and -어 가다 covers what continues from here on (점점 나아 가요, it keeps getting better). These are the tools for telling a journey: where you started, how far you’ve come, and where it’s heading. Perfect for talking about 건강 (health) and 운동 (exercise).

You can already report single events. Now you’ll narrate change over time — the slow climb from “I get winded on the stairs” to “I run every morning.” Along the way we’ll tame two tricky ㅅ-irregular verbs you’ll need at the gym and the clinic: 낫다 and 붓다.

Ten words for a health journey

These come up the moment you start talking about getting in shape.

How do I say something “became” different? — -어지다

To say an adjective came true over time — to become something — attach -어지다/-아지다 to the adjective stem.

The nuance is gradual change: not “it is healthy” (건강해요) but “it became healthy” (건강해졌어요). In Chinese-learner terms, it maps neatly onto 變得… — a state that wasn’t there before, and now is.

How do I cover “up to now”? — -어 오다

When an action stretched from the past all the way to the present, use -어 오다. It looks back over the whole stretch.

Picture 오다 (to come) pulling the action toward the present: it began back then and has come all the way here. Pair it with 동안 (for a span) and 지금까지 (until now).

How do I cover “from here on”? — -어 가다

The mirror image is -어 가다: an action that continues from now into the future. 가다 (to go) sends it forward.

So the contrast is purely directional: -어 오다 = past → now, -어 가다 = now → future. 살아 왔어요 (I’ve lived up to now) versus 살아 갈 거예요 (I’ll go on living).

Why is it 나았어요, not 낫어요? — the ㅅ-irregular

Two health verbs hide a trap. 낫다 (heal) and 붓다 (swell) are ㅅ-irregular: the final ㅅ simply drops before a vowel — and nothing replaces it.

Watch the spelling: 낫다 → 나아요 keeps two vowels with no ㅅ between them — that’s the signature of a ㅅ-irregular. (Don’t confuse 낫다 with 낮다 “low” or 낳다 “give birth”; only 낫다 drops the ㅅ.)

Telling your fitness story

Watch all of it land in one update to a friend:

See the arc: 운동해 왔어요 sums up the past three years, 좋아졌어요 marks the change that resulted, 부었었는데 / 나았어요 handles the ㅅ-irregular injury, and 해 갈 거예요 points to the road ahead. Past, change, present, future — that’s a full Level-3 narrative in four lines.

FAQ

What is the difference between -어 오다 and -어 가다? They are mirror images that both ride on a verb stem. -어 오다 looks backward: an action started in the past and has continued UP TO NOW — 3년 동안 운동해 왔어요 (I’ve been exercising for three years up to now). -어 가다 looks forward: an action continues FROM NOW into the future — 점점 나아 가요 (it keeps getting better from here). Think of 오다 (come) as the action coming toward the present, and 가다 (go) as it heading off into what’s ahead.

How do I conjugate the ㅅ-irregular verbs 낫다 and 붓다? In ㅅ-irregular verbs the final ㅅ drops whenever a vowel follows, but you do NOT add anything to replace it. 낫다 (to heal) → 나아요, 나았어요; 붓다 (to swell) → 부어요, 부었어요. So 감기가 다 나았어요 = my cold is all better, and 발목이 부었어요 = my ankle swelled up. Be careful: 낫다 sounds like 낮다 (low) and 낳다 (give birth), but only 낫다 drops the ㅅ this way — the spelling 나았어요 is the giveaway.

Does -어지다 work with verbs or only adjectives? For the meaning become — a gradual change of state — -어지다 attaches to ADJECTIVES: 좋다 → 좋아졌어요 (got better), 건강하다 → 건강해졌어요 (became healthy), 많다 → 많아졌어요 (increased). It turns a description into a change over time. (-어지다 also forms passives with some verbs, like 만들어지다 = get made, but the everyday Level-3 use you want here is adjective + -어지다 = become.)

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Next: asking favors politely — -을 텐데 and -기는요. Previous: guessing with -나 보다 and -은가 보다. Full path: curriculum hub.