Hair of the dog that bit you
Hairy eyeball
Halcyon days
Half-cocked
Half-hearted
Half inch
Hand over fist
Handbags at ten paces
Hands down
Hanged, drawn and quartered
Hanky-panky
Happy as a clam
Happy as a sandboy
Happy as Larry
Happy clappy
Happy slapping
Harbinger of doom
Hard and fast
Hard cases make bad law
Hard cheese
Hard hearted
Hard lines
Hard man is good to find - A
Hark, hark! the lark at heaven's gate sings
Harp on
Has the cat got your tongue?
Hasta la vista, baby
Hat trick
Have a Captain Cook
Have an axe to grind
Have an inkling
Have no truck with
Haven't got a clue
Have your guts for garters
He who can, does; he who cannot, teaches
He who laughs last laughs longest
He will give the Devil his due
Head over heels
Heads up
Hear hear
Heard it through the grapevine
Heart's content
Heavens to Betsy
Heavens to Murgatroyd
Heavy metal
Heebie-jeebies - The
Hedge your bets
Hell in a handbasket
Hell has no fury like a woman scorned
Hell or high water
Helter-skelter
Here lies one whose name is writ in water
Het up
Hiding to nothing - On a
High and dry
High and mighty
High five
High-flyer
High horse - get off your
High on the hog
High time
High, wide and handsome
Hissy fit
History is bunk
Hit the ground running
Hit the hay
Hit the nail on the head
Hobson's choice
Hobby-horse
Hocus pocus
Hoi polloi
Hoist with your own petard
Hoity-toity
(Can't) hold a candle to
Hold your horses
Homonyms
Honesty is the best policy
Hooray Henry
Horse and cart
Horse feathers
Horse, a horse, my kingdom for a horse - A
Horse's mouth - straight from the
Hot-blooded
Hot off the press
Hot on the heels
House divided against itself cannot stand - A
Household words
Houston, we have a problem
How are the mighty fallen?
How do you do?
How now brown cow?
How sharper than a serpent's tooth it is to have a thankless child
Hugger-mugger
Hung, drawn and quartered
Hunky-dory
Hunt and peck
Hush puppies