Clue is a synonym of Suggestion. Suggestion is related to Offer. Bid is a type of Offer. Bid is part of Bridge. 
Complicated is the opposite of Simple. Simple is related to Basic. 
Clue <--Synonym--> Suggestion <--RelatedTo--> Offer <--IsA-- Bid --PartOf--> Bridge 
Complicated <--Antonym--> Simple <--RelatedTo--> Basic 