Feeling is related to Want. Want is a synonym of Deserve. Deserve is a synonym of Earn. Earn is the opposite of Spend. 
Endless is derived from End. End is part of Event. Event is related to Reaction. 
Feeling <--RelatedTo--> Want <--Synonym--> Deserve <--Synonym--> Earn <--Antonym--> Spend 
Endless --DerivedFrom--> End --PartOf--> Event <--RelatedTo--> Reaction 