verhasst
detested
Strongly hated or deeply rejected by someone.
Frühes Aufstehen ist mir schon seit meiner Schulzeit verhasst.
Getting up early has been detested by me ever since my school days.

detested
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detested
Strongly hated or deeply rejected by someone.
Frühes Aufstehen ist mir schon seit meiner Schulzeit verhasst.
Getting up early has been detested by me ever since my school days.

The adjective 'verhasst' (detested) is usually used with a dative construction. The person who hates something is in the dative, while the hated thing is the subject of the sentence.
Diese Aufgabe ist mir wirklich verhasst.
This task is really detested by me.
'Verhasst' (detested) is the past participle form of the verb 'hassen' (to hate) with the prefix 'ver-'. The prefix 'ver-' can, as here, describe a change of state or a result: something became something hated.
Seine arrogante Art machte ihn bei den Kollegen verhasst.
His arrogant manner made him detested by his colleagues.
'Verhasst' (detested) is a very strong word. It does not simply express that you dislike something, but that you feel a deep aversion or hatred.
Nach dem Verrat war ihm sein ehemaliger Freund zutiefst verhasst.
After the betrayal, his former friend was deeply detested by him.
popular
'beliebt' and 'verhasst' are strong opposites. 'beliebt' means that many people like or appreciate someone or something. 'verhasst' means that someone or something is strongly hated or deeply rejected. 'verhasst' is much stronger than 'unbeliebt' (unpopular). You use it when the rejection is very emotional.

Bei vielen Anwohnern ist der laute Verkehr vor dem Haus verhasst.
Many residents detest the loud traffic in front of the house.
Der neue Sportlehrer ist in der Schule schnell beliebt geworden.
The new sports teacher quickly became popular at the school.