Best idiomatic dictionary

Have a trick up your sleeve: To have a secret plan which you will use at the right time.

Have your cake and eat it too: To have or want more than one can handle or deserves; or to wish for everything their way,
even if the wishes are contradictory.

Have your fill: To be fed up of someone or something.

Have your tail up: To be optimistic.

Have your work cut out: To be very busy.

He who hesitates is lost: Waiting too long can make a person lose an opportunity.

Head for the hills: To run away from trouble or problems.

Head is in the clouds: To be unrealistic.

Head nor tail: Not to be able to make head or tail out of something is not to be able to make any sense of it.

Head on the block: To be held responsible for something that has gone wrong.

Heads will roll: People are going to be punished or sacked for something that has gone wrong.

Hear a pin drop: This idiom is used to refer to complete silence in a place, when you can even hear the sound of a pin dropping.

Hear on the grapevine: To get to know something through rumours or gossip.

Heart in the right place: To be good deep inside even if sometimes the person may not appear to be so.

Heart in your boots: Very unhappy.

Heart in your mouth: To be very scared and nervous.

Heart misses a beat: To be suddenly shocked and stunned by something.

Heart of glass: To be a very emotional person.

Heart-to-heart: A frank and honest conversation between two people.

Heavy-handed: To use excessive force or strictness in dealing with someone or something.

Hedge your bets: Not to risk all you have on one thing but try other options too.

Hide nor hair: Not to have seen the hide or hair of someone is to have seen no trace of that person.

High and dry: To be left all alone with no help.

High and low: To search high and low for something or someone is to search everywhere.

High-wire act: A very risky and dangerous plan, task or activity.

Himalayan blunder: A very serious mistake.

Hit a nerve: When something or someone causes a person to feel hurt, more so emotionally than physically