Bigtime

Wait till you see your name in two-foot electrics over the front of every big-time house in the country.

Source: wiktionary

Krasnow is a big-time operator; I’ve always been, you might say, in the peanut end of the game.

Source: wiktionary

'On the level, honey, I have an all-time, big-time need for coffee.'

Source: wiktionary

Tired of shelling out bigtime bucks to see overpaid major leaguers with underwhelming stats and attitudes to match, baseball fans by the thousands are rediscovering a more relaxed—and cheaper—version of the national pastime: the minor leagues.

Source: wiktionary