Fatal is a synonym of Inevitable. Inevitable is a synonym of Necessary. Necessary is related to Important. Important is related to Matter. 
Position is the opposite of Attack. Abuse is a type of Attack. 
Fatal <--Synonym--> Inevitable <--Synonym--> Necessary <--RelatedTo--> Important <--RelatedTo--> Matter 
Position <--Antonym--> Attack <--IsA-- Abuse 