
die Abneigung
aversion
A strong feeling of reluctance, dislike, or antipathy toward a person, thing, or activity.
Sie hegt eine tiefe Abneigung gegen unehrliche Menschen.
She harbors a deep aversion to dishonest people.
aversion
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aversion
A strong feeling of reluctance, dislike, or antipathy toward a person, thing, or activity.
Sie hegt eine tiefe Abneigung gegen unehrliche Menschen.
She harbors a deep aversion to dishonest people.
The word is made up of the prefix 'ab-' (away) and the verb 'neigen' (to tend/lean). An 'Abneigung' (aversion) is therefore literally a 'leaning away' from something or someone.
Er neigt dazu, bei Stress zu viel zu essen.
He tends to eat too much when stressed.
'Abneigung' (aversion) is always directed 'gegen' (against/toward) a person or thing. This preposition takes the accusative.
Ich habe eine starke Abneigung gegen Spinnen.
I have a strong aversion to spiders.
'Abneigung' (aversion) is often combined with verbs that express a feeling. Typical phrases are 'eine Abneigung haben' (to have an aversion), 'eine Abneigung empfinden' (to feel an aversion), or the somewhat elevated 'eine Abneigung hegen' (to harbor an aversion).
Er empfindet eine tiefe Abneigung gegen laute Musik.
He feels a deep aversion to loud music.
rejection
Here, Ablehnung refers to the decision not to accept a proposal. Abneigung, on the other hand, is an inner feeling of aversion to the proposal. Someone who consciously says no is showing Ablehnung; someone who already finds the proposal unpleasant on an emotional level feels Abneigung.

Mia spürte sofort eine starke Abneigung gegen den Vorschlag.
Mia immediately felt a strong aversion to the proposal.
Mia erklärte ihre Ablehnung des Vorschlags in der Sitzung.
Mia explained her rejection of the proposal at the meeting.