We play Call My Bluff. Just to remind you, this involves two teams, each is presented with an obscure word which they have to define and only one definition is the real one. Opposing team has to try and guess which is the real one.
This involves pre-preparation - finding the words etc. and giving out however many pieces of paper as there are team members. They all have the word written on them, but only one also includes the definition. The person who has the definition has to pretend to cogitate and write a definition just like his/her fellow team members or it becomes blindingly obvious which is the real one.
The person who has researched the words clearly cannot be on a team; but what my OH and I used to do was to each do some words and be on different teams.
It can be totally hysterical - my OH's definitions always made mention of nubile maidens which caused much hilarity, mainly to see how he could manipulate a definition to include them.
Involves some preparation, but definitely worth it. Just google obscure English words and you will find plenty.