Because / Judging by

The pattern -기에 is used to provide the basis or standard for a judgment or evaluation. It attaches to a verb and essentially means "for the purpose of [verb]-ing..." or "to [verb]...". The clause that follows then gives your assessment.

Formation

Attach -기에 directly to the stem of any verb, regardless of whether it ends in a vowel or a consonant.

먹다 (to eat) → 먹기에

살다 (to live) → 살기에

공부하다 (to study) → 공부하기에

Usage

Use this pattern to connect an action with an evaluation. It answers the question, "Based on what standard are you making this judgment?"

Standard: 혼자 먹다 (to eat alone)

Judgment: 너무 많다 (it's too much)

Result: 혼자 먹기에 너무 많아요. (It's too much to eat alone.)

포기하기에 너무 일러. / 혼자 먹기에 너무 많아. / 믿기에 너무 수상해. / 공부하기에 좋아요.

In everyday conversation, you'll almost always hear -기에 shortened to -기엔. This is a natural contraction that makes speech flow more smoothly.

What is -기엔?

It's a contraction of -기에는. The particle -는 adds a nuance of contrast or topic, similar to "as for..." in English.

지금 가기에는 늦었어. → 지금 가기엔 늦었어. (As for going now, it's too late.)

학생이 사기에는 너무 비싸. → 학생이 사기엔 너무 비싸. (As for a student buying it, it's too expensive.)

When to Use It

Using -기엔 instead of -기에 will make you sound much more like a native speaker. It's the preferred form in most spoken contexts. Both are grammatically correct, but -기엔 is more common and natural-sounding.

지금 가기엔 늦었어. / 셋이서 살기엔 너무 작아. / 학생이 사기엔 너무 비싸. / 버리기엔 아까워.

Learners sometimes confuse -기에 with -(으)려면 because both can relate to a purpose. However, they have distinct functions.

-기에: Basis for Judgment

-기에 sets up an action as a standard for evaluation. The focus is on the judgment that follows.

공부하기에 좋아요. (This place is good for studying.)

The sentence is an evaluation of the place.

-(으)려면: Condition for a Goal

-(으)려면 means "if you intend to..." or "if you want to...". It sets up a condition that must be met to achieve a goal. The focus is on the requirement or next step.

공부하려면 조용해야 해요. (If you want to study, it must be quiet.)

The sentence states a necessary condition for studying.

Think of it this way: -기에 describes how suitable something is, while -(으)려면 describes what you must do.

셋이서 살기엔 너무 작아. / 셋이서 살려면 더 큰 집이 필요해. / 아이가 들기엔 너무 무거워. / 아이가 들려면 어른이 도와줘야 해요.

The -기에 pattern itself remains neutral in terms of politeness. The formality of your sentence is determined entirely by the final verb ending.

Casual Language (반말)

Use plain, non-polite endings like -아/어 for friends, family, or people younger than you.

포기하기에 너무 일러. (It's too early to give up.)

혼자 먹기에 너무 많아. (It's too much to eat alone.)

Polite Language (해요체)

Add -요 to the ending to create the standard polite form used in most daily situations.

포기하기에 너무 일러요.

혼자 먹기에 너무 많아요.

믿기에 너무 수상해. / 믿기에 너무 수상해요. / 잠자기에 너무 시끄러워. / 잠자기에 너무 시끄러워요.