Dehort
Dehort , transitive verb
[Latin dehortari; de- + hortari to urge, exhort.]
To urge to abstain or refrain; to dissuade. [Obsolete]
The apostles vehemently dehort us from unbelief.
“Exhort” remains, but dehort, a word whose place neither “dissuade” nor any other exactly supplies, has escaped us.