זַךְ (zak) is
a Hebrew adjective
meaning pure. It appears
11 times
in 4 books of the Hebrew Bible
(Strong's H2134).
Same Hebrew root (TWOT 550a)
Range of meaning (TWOT 550a)pure, clean; righteous; clear
Full entry: Brown-Driver-Briggs and Strong's
זַךְadjective: pure, clean
1.literally, pure, i.e. unmixed, free from foreign substances
2.figuratively, pure, clean, righteous
Strong's H2134זַךְ: clear KJV:clean, pure.
Meanings: Brown-Driver-Briggs (1906) and Strong's Hebrew Dictionary (1890), public domain, via the Open Scriptures Hebrew Bible Project (CC BY 4.0). TWOT numbers for reference only.
Root family 550: זָכַךְzākak — be bright, clean, pure; shining; cleanse; be transparent; be purer