So I am going to try again to get "nuts" approved for Chi. What brings this up is yesterday's 9 letter puzzle: "Guts" is not only allowed but a common word. Lets compare Nuts to Guts: From Collins dictionary:
Definition of 'nuts'
Word Frequency
nuts in British English
(nʌts ) slang
adjective
1. offensive
insane
2. sometimes humorous
eccentric or foolish in behaviour
3. (foll by about or on)
extremely fond (of) or enthusiastic (about)
exclamation
4. an expression of disappointment, contempt, refusal, or defiance
Now look at guts from the same source
in British English
(ɡʌts)
plural noun
1. the bowels or entrails, esp of an animal
The entire carcass - hide, guts, and bones - was devoured.
By the time they finish, the crewmen are standing ankle-deep in fish guts.
2. informal
courage, willpower, or daring; forcefulness
It takes guts to stand up to her.
The new Chancellor has the guts to push through unpopular tax increases.
It takes more guts than I've usually got to go and see him.
3. informal
the essential part
the guts of the problem
She has a reputation for getting at the guts of a subject and never pulling her punches.
The guts of the reactor have to be hauled out of the pressure vessel.
To allow Guts but not Nuts is inconsistent! Both should be allowed. QED