Let's learn about "망했다"

망했다 : (1) I'm doomed; I failed; we failed (2) I'm bankrupted

[other expressions]

- 망했다. (to younger people or friends)

- 망했네. (to younger people or friends)

- 망했어. (to younger people or friends)

- 망했군! (to younger people or friends)

- 망했구나! (to younger people or friends)

- 망했네요. (honourific by '요')

- 망했군요. (honourific by '요')

- 망했어요. (honourific by '요')

- 망했습니다. (formal; more honourific by '스')

[explanations]

* 망하다 : (1) (집안·회사 등이) fail, go under, go bankrupt, (informal) go broke, (informal) go bust; (회사 등이) go out of business (2) (as the form of 망할) will fail

- 내 사업이 망했다 : My business has failed

- 망할 자식! : You bastard!

* 망했다 : past tense or present perfect form of 망하다 by '-었-'

* 망했습니다 : 망했(the stem of 망했다) + 스(a suffix makes a verb more honourific) + -ㅂ니다(an honourific descriptive verb ending suffix)

* a verb + -다 / -네 / -아 / -어: a non-honourific descriptive verb ending suffix

* a verb + -군! / -구나! : a non-honourific exclamatory verb ending suffix

* a verb + -네 / -아 / -어 / -군! + -요 : an honourific verb ending suffix

* a verb +  -습니다 / -ㅂ니다 : an honourific descriptive verb ending suffix by '스/' / '-ㅂ'