Here are all the the English 4 letter words starting with Z from zach to zuza.
zach
zack
zags
zain
zany
zant
zaps
zarf
zarp
zati
zeal
zebu
zeds
zeed
zeke
zeks
zeme
zemi
zend
zenu
zero
zest
zeta
zeus
ziff
zyga
zigs
zila
zyme
zinc
zing
zink
zion
zipa
zips
zira
ziti
zits
zizz
zobo
zoea
zogo
zoll
zona
zone
zool
zoom
zoon
zoos
zori
zubr
zulu
zuni
zuza
These can be used for scrabble but not wordle (which uses 5 letter words).