I tried poetics in yesterday's Challenge puzzle but it was rejected.  It's neither a plural nor a verb form, so it should count in my view.

I note that similar words (politics, optics and heroics) have previously been suggested and are awaiting Alan's verdict, and no doubt there are other words representing fields of study/knowledge ending in 'ics' that are currently not allowed but probably should be.   

I was surprised that taxies came up as rare in yesterday's standard puzzle.  I'd have thought pretty much everyone would be aware of the verb to taxi (as planes do on runways).  It's certainly more common than sexto! (which I note is awaiting review by Alan after MK suggested a downgrade in 2014).

Yesterday's standard puzzle was without doubt the easiest in Chi history.  225 people got rosettes in that game - that's a record by a long way, if my memory serves me correctly.

I tried unitarism in yesterday's 10 letter puzzle, but it was rejected.  It has two meanings:

In industrial relations, it's the philosophy that employer interests and employee interests are fundamentally aligned.

In politics, it's the process of amalgamating smaller regions into a single jurisdiction.

Surprisingly, I haven't been able to find it listed in any dictionaries (though admittedly, my search was not extensive), but Wikipedia has a listing for the political definition, and if you google it, you get 47,000 hits, mostly related to the industrial relations definition.

It's a word that's really only used in academic circles, so it's definitely one for the rare list.  Despite it's absence from dictionaries, it is a legitimate word and I'd suggest it's worthy of inclusion in the Chi lexicon, along with unitarist.

Bunt and bunted both appeared in yesterday's standard puzzle as rare words.  This surprised me.  I doubt there would be many native English speakers who weren't familiar with them.  I'd suggest they should be upgraded to common.

Another rather odd 'common' word that cost me a rosette in yesterday's 10 letter puzzle.  I've never seen it spelt that way.  Is it common?

Many of you will know that I'm somewhat obsessed with keeping records of my Chi performances.  Well, I've just recorded a personal best for the highest number of common words found to get a rosette - 93 in the 10 letter puzzle that just closed.  My previous record was 91.

This is a little short of my record for the highest number of common words found in any game, which is 99.  I finished one short of a rosette that day - I missed a simple four letter word.  That four letter word was nowhere near as colourful as the four letter words that emanated from my mouth on checking the solution.