Let's learn about "-기-" suffix make into " transitive; passive; causative " verb

<“-기-“ Usage>

[접미사(suffix)]

《흔히 ‘ㄴ˙ㅁ˙ㅅ˙ㅈ˙ㅊ˙ㅌ’ 따위 받침을 가진 어간에 붙어》
this is attached to the root stem of a word which has often last letter like ‘ㄴ˙ㅁ˙ㅅ˙ㅈ˙ㅊ˙ㅌ’

1. 자동사를 타동사로 바꾸는 구실을 함 : this change a intransitive verb into a transitive verb

[ex]
(1) 숨다(lurk; hide) —> 숨기다(conceal; hide; cover)
(2) 웃다(laugh) —> 웃기다(make laugh)
(3 남다(remain) —> 남기다leave behind; hand down)

2. 타동사를 피동사나 사동사로 만드는 구실을 함 : this change transitive verb into a passive verb or a causative verb

[ex]
(1) 안다(embrace) —> 안기다(be embraced; be in arms)
(2) 벗다(take/peel off) —> 벗기다(unclothe; undress; strip of ; take off)
(3) 찢다(tear down;  rend; rip) —> 찢기다(get torn[rent / ripped])