the whistles and catcalls from the customers (the cries of "hey, there go the profits!". . . "mazeltov!" and "well, he didn’t work here very long.. ." which invariably seems to follow the breaking of glass or dishware in a public restaurant) all seemed to confuse him.
There are no more uses of "invariably" in the book.
Show samples from other sources
I tell myself to go to sleep early, but I invariably end up watching television late into the night.
You better tell her we’re starting earlier. She’s invariably late.