to put all your energy or enthusiasm into what you are doing.

Supporters are going all out for him in this campaign.

Huff was one of the toughest guys I've ever seen play the game — he just went all out on every single play.

Related vocabulary: go for broke, full blast

• be like a cat on a hot tin roof
• be like a child in a sweetshop
• be like a deer caught in the headlights
• be like a dog with two tails
• be like a fish out of water
• be like a kid in a candy store
• be like a rabbit caught in the headlights
• be like a red rag to a bull
• be like a spare prick at a wedding
• be like chalk and cheese
• be like Fort Knox
• be like looking for a needle in a haystack
• be like painting the Forth Bridge
• be like rearranging the deckchairs on the Titanic
• be like ships that pass in the night
• be like taking candy from a baby
• be like talking to a brick wall
• be like two peas in a pod
• be like watching grass grow
• be like watching paint dry
• be like water off a duck's back
• be living on another planet
• bells and whistles
• belly laugh
• be long for this world