so, mandaly, 'ke kase' really means to be nervous. Even though 'kase' means 'to break'. So 'ke kase' has none to do with a "broken heart' . Am i right?

Wi, ou korèk.  Ou byen di.

Kè kase (as a verb) → to be antsy, to be tense, to be panicking, to be anxious.

Kè m kase.
I have a bad feeling.

Kè m pa janm kase.
I never worry.

Chak kou l'ale kay doktè, kè'l ap kase.
Every time she goes to the doctor's, she gets nervous.


Poukisa kè'w ap kase konsa?
Why are you so worried?



Kè kase (as a noun) → anxiety,  fear, apprehension

Ou ban m kè kase.
You frightened me.

Ou pa bezwen gen kè kase.
You don't need to worry.


Mwen dòmi ak kè kase.  Mwen leve ak kè kase.
I go to sleep with fear.  I wake up in fear.

Another expression, kè sote is used in the same manner.

Other Haitian Creole expressions for kè kase (n.) are: kè sote, laperèz, anksyete, kè sou biskèt, enkyetid, lafreyè, sousi, or lakrent (all are used in everyday conversation)

Now if you wanted to say a broken heart, then you would say kè brize

Peace of mind (in Creole)

Peace of mind.
Lapè nan lespri
Kè poze
or
Trankilite

The opposite of that would be

Upset / distress
Kè sote
Kè kase
Panik

I am not afraid!

I'm not afraid!

Mwen pa pè!

Kè m pa kase!
Kè m pa sote!