be extravagant

See: dissipate
References in classic literature ?
Yes, but my lord will find that he can't be extravagant with me.
I fear chiefly lest my expression may not be extravagant enough, may not wander far enough beyond the narrow limits of my daily experience, so as to be adequate to the truth of which I have been convinced.
Your natural instinct is to be extravagant but others will understand that, like a lot of us this year, belts have to be tightened.
And yet we humans are taught that it is sinful to be extravagant.
It did have a kind of baroque quality, proclaiming that art could be extravagant but still serious.