How to Say "to sicken" in Spanish
The Spanish word for “to sicken” is “enfermar” — C1 level.
English → SpanishC1
verbC1
to cause disgust or illness

Examples
Tu actitud me enferma.
Your attitude sickens me.
La falta de higiene en ese local puede enfermar a los clientes.
The lack of hygiene in that place can make customers sick.
Targeting someone
When this word means 'to make someone sick', you must use the word 'a' before the person receiving the action. Example: 'Enfermar a sus hijos'.
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