Basically

Adverb

1. In a fundamental, essential or basic manner.

   "They've added some fancy features, but it's basically still a crappy car."

2. Essentially; mostly; pretty much.
3. Used to refer to the most important or fundamental point that the speaker is making or to indicate a generalization or simplification; sometimes tending towards a meaningless filler word.

   "I shouldn't have done it, basically."