Hit the nail on the head
To hit the nail on the head is to be exactly right.
To get hitched is to get married.
Go the whole hog
To go the whole hog is to do something fully.
Close to home
When a remark hits close to home, it is uncomfortably accurate.
When you are hooked to something, you are addicted to it.
By hook or by crook
To achieve something by hook or by crook is to achieve it by any possible means.
Off the hook
When you are off the hook, you are no longer in trouble.
Jump through hoops
To jump through hoops is to undergo a difficult test.
Not give a hoot
When you don’t give a hoot, you don’t care at all.
When someone is hopping mad, they are very angry.
Stir up a hornet’s nest
To stir up a hornet’s nest is to cause difficulties to arise.
From the horse’s mouth
To hear something from the horse’s mouth is to hear it from the person directly concerned.
Hold your horses
To hold your horses is to wait a moment.
Hot under the collar
When you are hot under the collar, you are angry or annoyed.
In hot water
When you are in hot water, you are in deep trouble.
Get on like a house on fire
When two people get on like a house on fire, they enjoy a very good relationship.
Put your house in order
To put your house in order is to make necessary reforms.