The term "crash hot" is often used in the negative, such as "I'm not feeling too crash hot today". I am trying to find out when the term was first used and why. I have used Internet search but have not found anything about its origin.
Its usage seems to have been increasing since the 80's/90's mainly in Australia. Its origin is not clear, probably from 'crash' in the sense of 'extreme'.
Crash hot (from wiktionary)
- (slang, Australia, New Zealand) Very good, excellent; very well. Well well well, don′t you look crash hot in your new sunnies!
- I'm sorry boss, I can′t come in to work today, I′m not feeling too crash hot. 1991, Antonio Casella, The Sensualist, page 28, Certainly Nick isn′t too crash hot on the old pen, something which he admits freely.
Origin: (from yourdictionary.com)
- Perhaps a nonstandard adverbial usage of crash (“extremely”) + hot (“performing well”).
The following extract refers to crash hot as a mid-80s Australian expression:
- I was young and living in Australia with muscles that worked. My time in Sydney wasn’t all wasted, though: I did buy a pair of Hot Tuna boardshorts – they were crash-hot (authentic mid-80s Aussie slang).
According to The Dictionary of Contemporary Slang di Tony Thorne, the expression might be an euphemism for shit-hot.
Ngran crash hot