i Register
In some senses, obscenely is marked as colloquial. Watch for register when choosing this word.
adv
In an obscene manner; vulgarly.
In an excessive manner.
I live in an elderly building in Boston's Back Bay. In summer the place sizzles. In winter, it's hotter (unless, of course, the wind blows. Then there's no heat at all. I suspect our central heating unit is an obscenely large candle that gets blown out when we need it most.)
By the year 1765, Richard `Dickie' Tattersall, the absurdly romantic self-styled soldier of fortune and indulged son of an obscenely well-off Yorkshire squire, was brimming with gratitude[.]