1 [sentence adverb] spoken
used to emphasize the most important reason or fact about something, or a simple explanation of something:
Basically, I'm just lazy.
Well, basically, it's a matter of filling in a few forms.
I used to see him every night, basically.
in the main or most important ways, without considering additional details or differences [= fundamentally]:
All cheeses are made in basically the same way.
I believe that human beings are basically good.
Basically, he hadn't changed at all.