6-letter words ending in Z include: kibitz ersatz pizazz
Four letter words ending in z include:quizritz
5-letter words: enzym, nizam, ziram, zuzim 6-letter word: shazam
There are few 7 letter words ending with s that is pronounced as a z, such as "species", and also "satirize" that is an 8 letter word with z as the seventh and eighth e that is not pronounced. Schlitz
fizz, and jeez!
They are ZITI and ZUNI.
It is Zoomed.
http://www.findtheword.info/resultat.php?stype=ends&sword=Z&page=1 has a last of all the words ending in Z, there are plenty of 6-letter words there.
wizz Spaz Fuzz
weezfizz, and jeez!
Kibbitz pizzazz showbiz.