Every time i say "Long and hard" in a sentence, i always find my self thinking about how dirty it sounds, and other people would probably point it out as well.
I was wondering if there's any less sexual sounding alternatives to them three words. For an examples i'd use it in things such as, i was thinking long and hard, i was working long and hard, etc.
Doesn't matter if the alternative is a single word, or multiple, i just wanted to avoid the whole string of words and say something else.