The wife of an Earl is called a Countess.
Dutchess would be the opposite of Earl.
Countess is the opposite gender for earl.(I think).
Since Duke of Earl is slang for a person that succeeds on a task, the opposite of a Duke of Earl would be a busta or buster which is slang for a person that fails at a task.
A countess's male counterpart is a count or an earl (equivalent British nobility).(It's not really an opposite, just the opposite gender.)
An earl is a title for a male person, there is no equivalent for this title for a female. The female partner of an Earl (or a female Earl) was called Lady. If she also held the title herself then she was called the Earl of whatever place.
They are known as the Earl and Countess
earl earl
Earl Bartlett (1939)Earl Gros (1967-1969)Earl Holmes (1996-2001)Earl Murray (1952)
Earl Torgeson went by The Earl of Snohomish.
Earl Weaver went by The Earl of Baltimore.
Earl Hebner goes by Baby Earl.
An Earl of is the rank given but no stately home is there whereas the Earl comes with the stately home.