The Oxford dictionary defines "Hypocritical" as:
Behaving in a way that suggests one has higher standards or more noble beliefs than is the case.
However I derived word Hypocritical from personal experience to mean something along the lines of:
Going against your own word.
Or as Itolet put it: "does not practice what they preach"
Can someone shed light on the matter, as to how the Oxford definition translates to the more popularized "going against one's own word" usage of the word?