"Chha" can mean "be different", "be better", "be worse".
Án-ne bô chha. That doesn't make any difference.
Chia̍h io̍h-á chia̍h-liáu ū khah chha--chi̍t-sut-á. He's a little better after taking the medicine.
Góa ê tōa-hàn--ê chin gâu tha̍k-chheh, sè-hàn--ê ū khah chha--chi̍t-sut-á. My older son is a good student; the younger one is not such a good student.
Is there a way to determine whether it means "better" or "worse" in a randomly given sentence? Like how would I know that "chha" in the last sentence means "worse (student)"? Maybe it says that the younger one is even better? And in the second sentence, maybe after taking the medicine I feel even worse. So just guessing doesn't work here.
And sometimes it's even hard for me to determine whether it means "different" or "worse"/"better".
- Kin-á-ji̍t ê thiⁿ-khì chha cha-hng chha chin-chē；cha-hng khah joa̍h.
Does it mean that todays' weather differs a lot from yesterday's, or does it mean that the weather today is better than yesterday's weather (because yesterday was hotter and the speaker prefers cooler weather), or does it mean that the weather today is worse than yesterday's (because it's hotter, and the speaker actually prefers the hotter weather)?