god-awful

The compound "god-awful" is a quintessential example of American English intensification from the 19th century. The word "awful" itself underwent a significant semantic shift from its original meaning of "full of awe" (i.e., inspiring reverential fear) to its modern sense of "very bad." The addition of "god" as an intensifying prefix, likely a euphemistic alteration of "hell" or a direct invocation for emphasis, serves to amplify this negative sense to an extreme degree. Thus, the literal construction "god-awful" follows a logical path of intensification, using the supreme being's name to stress something as being as profoundly terrible as divine awe is profound.

Structure: god + awful - god (Old English): The supreme being, used here as an intensifier. - awful (Old English): From 'awe' (dread, reverence) + '-ful' (full of). Originally meaning "inspiring awe," now means "very bad."