Longman Dictionary of Contemporary English - basically

~ adv 1 sentence adverb spoken used when giving the most important reason or fact about something, or a simple explanation of something  (Basically, I just don't have enough money. | Well, basically, it's a matter of filling in a few forms.) 2 in the main or most important ways, without considering additional details or differences  (The two structures are basically the same. | He's basically a nice guy.) 3 in a very simple way, with only the things that are completely necessary  (The office was very basically equipped.)