Appropriate is a synonym of Allow. Allow is a synonym of Suffer. Suffer is a type of Tend. 
Urge is a synonym of Impulse. Impulse is etymologically related to False. False is related to Fraud. Fraud is related to Cheat. 
Appropriate <--Synonym--> Allow <--Synonym--> Suffer --IsA--> Tend 
Urge <--Synonym--> Impulse --EtymologicallyRelatedTo--> False <--RelatedTo--> Fraud <--RelatedTo--> Cheat 