A divine attribute we often wrongly assign to one we admire, but sadly, like telepathy, honesty is a characteristic not inherent in humanity. To be truly and completely honest with someone, one must first be truly and completely honest with one’s self. Since our species is incapable of seeing past its own fears, desires, prejudices, convictions, emotional attachments, memories and flawed perceptions, man is not capable of viewing an unfiltered reality. Every single conclusion a person comes to is first carefully screened and reviewed through a series of subconscious unrelated facets of collective reasoning and thus all humanity is blind to all truth. Thus, no one is truly and completely honest with themselves and thus cannot be truly and completely honest with others. The most anyone can hope to give is their honest opinion. But that’s all it is, an opinion.

What everyone wants you to be, but no one wants to hear

Implies that the speaker usually lies, but will be honest this one time. Yeah right.

an incredibly over-used refuge for the inarticulate to máke a point of statement.Can be used in any sentence as long as you agree with yourself.

The crutch of a idiot who uses it to append declarative sentences in order to sound more authoritative.

Absolutely pointless statement, that adds nothing to any conversation it is included in. Used by dumbasses to sound "smarter" or "prove a point".

Also see: to be frank, frankly, honestly

A significant human quality in which a person communicates and acts truthfully, in accordance with a sense of faithfulness, sincerity, and fairness. Honesty is one of the characteristics that establishes a virtuous person. Honesty implies a lack of deceit. A principal reason for this may be that honesty simplifies communication, in that honest statements can be trusted at point blank with little or no doubt. An honest person describes one who will always (or mostly always) tell true statements, narratives, or promises.
A honest person is someone who will never lie, cheat, or steal. This is the type of person that can easily be trusted by others.

(Note: honest is DIFFERENT than truth)
not deceptive or fraudulent; completely telling the truth in regards to the matter at hand

The phrase "to be honest" is often used as a filler which makes a sentence run on. It is often perceived that one who uses such phrase implies that they often are not honest, so they feel the need to say "to be honest" when they actually are being honest.