Sink is a synonym of Settle. Settle is a type of Become. Become is a synonym of Fall. Fall is a type of Travel. 
Weird is etymologically related to Worth. Worth is related to Respect. Respect is related to Military. 
Sink <--Synonym--> Settle --IsA--> Become <--Synonym--> Fall --IsA--> Travel 
Weird --EtymologicallyRelatedTo--> Worth <--RelatedTo--> Respect <--RelatedTo--> Military 