Crazy Synonyms

144 crazy synonyms include mad, insane, out of one's mind, deranged, demented, not in one's right mind, crazed, lunatic, and unbalanced. Crazy is an adjective, and its antonyms are sane and sensible. Here are some additional synonyms for "crazy" with example sentences.

Another word for Crazy

144 other ways to say crazy.

1. mad

  • yarra  
  •  
  • with a screw loose  
  •  
  • wacko  
  •  
  • up the pole  
  •  
  • unstable
  •   
  • unhinged  
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  • unbalanced  
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  • touched  
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  • stark staring mad  
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  • stark raving mad  
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  • stark mad  
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  • squirrelly  
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  • sectionable  
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  • screwy  
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  • round the twist  
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  • round the bend  
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  • raving mad  
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  • porangi  
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  • out to lunch  
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  • out of one's tree  
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  • out of one's mind  
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  • out of one's head  
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  • one sandwich short of a picnic  
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  • off the wall  
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  • off one's trolley  
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  • off one's rocker  
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  • off one's nut  
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  • off one's head  
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  • nutty as a fruitcake  
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  • nutty  
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  • nutsy  
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  • nutso  
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  • not the full shilling  
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  • not right upstairs  
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  • not in one's right mind  
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  • not all there  
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  • not (quite) right in the head  
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  • non compos mentis  
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  • meshuga  
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  • mental  
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  • mad as a March hare  
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  • mad as a hatter  
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  • mad
  •   
  • lunatic  
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  • loopy  
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  • loony  
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  • loco  
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  • insane
  •   
  • gonzo  
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  • gaga  
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  • doolally  
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  • disturbed  
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  • distracted  
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  • dippy  
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  • deranged  
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  • demented  
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  • cuckoo  
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  • crazed  
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  • crackers  
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  • bushed  
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  • buggy  
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  • bonkers  
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  • batty  
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  • bats  
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  • barmy  
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  • barking mad  
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  • barking  
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  • bananas  
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  • away with the fairies  
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  • as daft as a brush  
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2. preposterous

3. very enthusiastic

  • wild
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  • very keen on  
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  • very enthusiastic  
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  • sweet on  
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  • smitten with  
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  • potty  
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  • passionate  
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  • nutty  
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  • nuts  
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  • mad
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  • infatuated with  
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  • gone on  
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  • fond of  
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  • fanatical  
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  • excited
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  • enamoured of  
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  • devoted to  
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Use crazy in a Sentence

He went crazy with excitement.

She had a crazy idea.

The party was absolutely crazy.