Was heißt »idiopathisch« auf Englisch?

Das Adjektiv idiopathisch lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Synonyme

My second primary school teacher (1941) was a beautiful blonde named Helena.
Practising every day is essential when you are learning to play the piano.
Oxygen is essential for life.
What is essential is invisible to the eye.
Almost all the country's essential services have been privatised.
A fake bushy beard is an essential part of a Father Christmas costume.
Water is essential to our life.
It's essential for you to practise every day.
The two most essential parts of speech are verbs and nouns.
A driving licence is absolutely essential here.
Some of my classmates from primary school are already grandparents.
Some of my classmates from primary school are already grandmothers and grandfathers.
That primary school has a strong football team.
My younger brother goes to primary school.
My little brother attends primary school.
My little brother goes to primary school.
My little brother is at primary school.
I know everything about Tom. We've been together since primary school.
The children at our primary school are taught solely in English.
The ability to read faces is an essential skill.