heck 
/ˈhɛk/ noun
/ˈhɛk/ noun [noncount] informal — used as a more polite form of hell ▪ Oh, heck, I forgot my keys. ▪ “Did you give her any money?” “Heck, no!” ▪ They were mad as heck. ▪ I decided to go just for the heck of it. ▪ It was one heck of a good fight. ▪ Where in (the) heck did I put my keys? ▪ My back hurts like heck. ▪ Let's get the heck out of here. ▪ What the heck was that? ▪ What the heck, let's try it.
