Strong’s Greek
G4490 — rhetos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ῥητῶς
rhetos — pronounced hray-toce'
adverb from a derivative of 4483; out-spokenly, i.e. distinctly:--expressly. see GREEK for 4483
1 occurrence in the KJV.
1 Timothy 4:1
Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;