안 A/V-아/어요 (A/V-지 않아요)

not

Structure
하다 contraction: 안 + 해요 → 안 해요 (not do)
Regular ㅏ/ㅗ: 안 + 잡아요 → 안 잡아요 (not catch)
Regular other vowel: 안 + 먹어요 → 안 먹어요 (not eat)
ㅏ + 아요 contraction: 안 + 가요 → 안 가요 (not go)
ㅗ + 아요 → ㅘ요: 안 + 봐요 → 안 봐요 (not see / watch)
ㅐ + 어요 contraction: 안 + 보내요 → 안 보내요 (not send)
ㅜ + 어요 → ㅝ요: 안 + 배워요 → 안 배워요 (not learn)
ㅣ + 어요 → ㅕ요: 안 + 마셔요 → 안 마셔요 (not drink)
ㅚ + 어요 → ㅙ요: 안 + 돼요 → 안 돼요 (not become)
Complex vowel, no contraction: 안 + 쉬어요 → 안 쉬어요 (not rest)
ㄹ-final regular here: 안 + 살아요 → 안 살아요 (not live)
Explanation

This pattern is added to verbs and adjectives to negate an action or state.

It approximates to 'not' in English.

It is formed by adding to the front of verbs and adjectives or -지 않아요 to the end of verb and adjective stems.

Details

Because verbs that end in 하다 are comprised of 'Noun + 하다', they are negated by adding 안 to the front of the verb, forming 'Noun 안 하다'. Adjectives, on the other hand, are negated by adding 안 to the front, as in '안 + Adjective'. Note, however, that for the verbs 좋아하다 (to like) and 싫어하다 (to dislike), because they are not verbs in the form of 'Noun + 하다', but rather are indivisible, single verbs, they are written as 안 좋아하다/좋아하지 않다 and 안 싫어하다/싫어하지 않다.

Although 안 and -지 않다 can be used in declarative and interrogative sentences, they cannot be used in imperative or propositive sentences.

안 가십시오, 가지 않으십시오
안 먹읍시다,먹지 않읍시다

Kimchi Reader

A pattern used to express the negative form of a verb.