ベラボー meaning

[ronaldhw]

Tried to find this katakana word meaning over the internet but no success..

any one know this word ベラボー ?

usage example:
ベラボーに高い
こいつはベラボーに調子いいや

[Belton]

absurd、unreasonable, awful

べらぼうに高い outrageous, absurdly expensive

It's not necessarily a katakana word. Maybe just katakana for emphasis or stylistic reasons.
From the various english words I've seen attached to it it may not be one for the grandparents or classroom. 笑

ALC's Waeiji has this entry
べらぼうに {副} : blamed, blinking〔強調〕, blooming〔強意語。bloody の婉曲語〕, ****censored*****〈米俗・卑〉, confoundedly, cursedly, deucedly〈話〉, enormously, perishing〔強調〕

[ronaldhw]

Thank you very much