こんな長い間待たせてごめんなさい。

こんな長い間待たせてごめんなさい。

I am sorry to have kept you waiting so long.

こんな長(なが)い間(ま)待(ま)たせてごめんなさい。

Konna nagai ma matasete gomennasai.

こんな (こんな)

such (about something or someone close to the speaker (including the speaker), or about ideas expressed by the speaker); like this

長い (ながい)

long (distance); long (time); lengthy

間 (ま)

space; room; time; pause

待つ (まつ)

to wait; to await; to look forward to; to anticipate; to depend on; to need

御免なさい (ごめんなさい)

I beg your pardon; excuse me

Readings: チョウ、なが.い、おさ

Meanings: long, leader, superior, senior

Readings: カン、ケン、あいだ、ま、あい

Meanings: interval, space

Readings: タイ、ま.つ、 -ま.ち

Meanings: wait, depend on