Phrases, to warn (a person) his willor of his will; to warn (a person's) thoughts.

transitive. To balk, disappoint (a person).

To deprive of. transitive. To remove something from the possession of (a person or thing); to deprive or strip of something. Obsolete.

To frustrate, render nugatory (an attempt or purpose); to parry (a blow); to baulk, disappoint (hopes, etc.); to baffle, frustrate the efforts of…

transitive. To place a balk in the way of. To check, hinder, thwart (a person or his or her action).

(transitive and intransitive) to cross the path or way of; to thwart or oppose (a person).

In extended and figurative uses. transitive. To divert (a person) from his or her purpose; to confound or defeat (someone).