Alpha Beta ... The last word in the dictionary, can anyone beat that?? Huh!

zyzzyvas

Any of various tropical American weevils of the genus Zyzzyva, often destructive to plants.
ZZTop *** (jk)
The only way I can approach this feat is by presenting its equal. Here is the first word in the dictionary. Ready for it? Prepared to be overwhelmed by awe?

You'd better sit down.

Okay, take a deep breath.

Here it is:

a

Yeah, I know, it's pretty momentous, isn't it? My mind's still reeling.
Students: Are you brave enough to let our tutors analyse your pronunciation?
A glass of red wine to the person who guesses what the word in the "middle" is.
Two more words, which are now obsolete though, are zyxt and zyxst. Zyxt is a Kentish word that is the second singular indicative present form of the verb see. Zyxst means 'sixth'.

(Sorry, I know this is an older thread but I like to browse).