Korean · Pronunciation Guide
cha-ka-da. Two aspirated consonants back to back: a breathy ㅊ, then a ㅋ formed by the ㄱ of 착 fusing with the ㅎ of 하.
chakada
No peak anywhere in the word, but the breath pattern gives it shape: two aspirated consonants in a row and then a relaxed one. That is a texture rather than a stress, and it is what makes the word feel front-loaded.
Listen: 착하다
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제 친구는 아주 착해요.
Je chinguneun aju chakaeyo.
My friend is very nice.
Listen: 제 친구는 아주 착해요.
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제 친구는 아주 착해요 conjugates to 착해요 and keeps the merge. The word 친구 in front also opens with an aspirated ㅊ, so the sentence carries three genuine puffs of air in seven syllables -- unusually breathy for Korean.
Reading the letters separately gives 'chak-ha-da' with a hard k, a gap and an h, when there is only one consonant there. Softening the opening ㅊ is the other error and it produces 작하다, which does not exist, so both aspirations have to be genuinely audible.