Bleh

[Rihanna]

State of mind usually caused by boredom or a annoying situation that doesnt really causes any heavy emotional reactions.

[Tina]

Average, I dunno sort of expression. Instead of a word youd say bleh.

[Little_Girl]

A blatant expression of boredom.

[PussyCat]

The Bleh Generation is an internet movement started a few months ago and that has already a world success on forums and internet communities. Its slogan :
Think different. See further. Say BLEH.
The Bleh generation, technically, is a state of mind. Bleh expresses an intense frustration, the fact that life is not easily livable, that you dont expect anything more from this world. Though, it cant be connected to the no future movement, and either to any punk or goth movement. The Bleh generation is someting unique, something that truly goes to the essence of the emotional base of todays society.
Bleh doesnt reject this world, actually bleh doesnt reject anything. But bleh doesnt accept anything either.
All is bleh, and bleh is ill.

[Sonia]

A general expression of frustration and/or disdain

[Tina]

(noun, adverb/adjective)
[b-leh]
1 to greet or acknowledge, but only slightly
2 to express sentiment or mood, but only slightly
Not to be confused with blah the term bleh is generally utilized as a conversation deterrent. Oftentimes people find themselves at the mercy of a conversation they do not wish to participate in. This predicament is typically initiated by a person greeting another or by a person answering a question regarding their general state of health/well being with what might be called a conversation initiator. For example, if person A were to ask person B how he/she is doing, the answer might take the form of an unwanted 30-minute conversation. It is in situations like this, where there is pressure to acquiesce a measure of social etiquette with a response but insufficient time/desire to address the situation with the full answer as would normally be offered that we have use for this term. In definition 1 then the implied sentiment, if transcribed, would be, I acknowledge that you still exist...thats great...good work...Id love to take the time to greet you properly but I simply cannot at the moment. (Note: its possible that, in fact, you would not love to take the time to greet that person properly; in any instance)
Regarding definition 2, intonation is an important variable. Again the same theme of deterring a conversation is at heart, but in the interests of satisfying social etiquette the term may be used with varying intonation to reveal some extra detail as to the persons sentiment/mood. A short descending tone might, for example, reveal anger (another reason why you should not try to have a conversation with that person), while a stretched monotone might be used to express boredom or discontent. With experience this term can come to have a variety of specific meanings when accompanied by a mastery of its applicable intonation.

[Little_Girl]

An adaptation of the word [meh], a kind of hybrid between [Bleurgh], a sound more than a word, meaning that you are totally disgusted by something, and [Meh], a word of passive, unenthusiastic attitude, also meaning whatever. bleh is like a slightly disgusted [meh].

[Donald Trump]

A word that is used by stereotypical vampires.

[Rihanna]

Put simply the word bleh is a verbal shrug. It can be used for every situation that a shrug of ones shoulders can. Also it can be used to show signs of frustration, confusion, indecision and boredom. It is often used in reply to a question that you have no interest in answering or have no answer for, or in a situation where you dont know what to say so you simply shrug it of by saying bleh.

[Sonia]

1. A word or noise that is used out of laziness or disinterest to something...easier than thinking of and saying words :-P

2. Something to imply that you dont really like or are bothered with something, or if its a bit boring