Was heißt »unumgänglich« auf Englisch?

Das Adjektiv »unumgänglich« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Synonyme

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.
The ability to read faces is an essential skill.
Because plants use water continuously, but in most places it rains only occasionally, the water-holding capacity of soils is essential for plant survival.
In the depths of winter, a hot-water bottle is essential.
In chess, it is essential to know the legacy of the great chess players.
The ability to calculate lines deeply and precisely is essential for every player.
The bridge is closed for essential repairs.
Attendance is essential.
Being well prepared for the exam is essential.
Salt is essential to life.
It's essential for you to practice every day.
It's absolutely necessary that you be at the meeting.
I only work on weekends if absolutely necessary.
The examiner will then ask a question only when it is absolutely necessary.
It's essential to be well prepared for the exam.