The Collaborative International Dictionary
Dehort
Dehort \De*hort"\, v. t. [imp. & p. p. Dehorted; p. pr. & vb. n. Dehorting.] [L. dehortari; de- + hortari to urge, exhort.] To urge to abstain or refrain; to dissuade. [Obs.]
The apostles vehemently dehort us from unbelief.
--Bp.
Ward.
``Exhort'' remains, but dehort, a word whose place
neither ``dissuade'' nor any other exactly supplies,
has escaped us.
--Trench.
Wiktionary
dehort
vb. To dissuade